Multiple frequency band information signal universal front end with adjustable ADC(s)

ABSTRACT

A wireless device includes processing circuitry, a receiver section, a transmitter section, and an antenna. The processing circuitry determines a set of information signals of a RF Multiple Frequency Bands Multiple Standards (MFBMS) signal. The receiver section down-converts a portion of the RF MFBMS signal by one or more respective shift frequencies to produce a corresponding baseband/low Intermediate Frequency (BB/IF) information signal from which the processing circuitry extracts data. The transmitter section converts a respective BB/IF information signal received from the processing circuitry by a respective shift frequency to produce a corresponding RF information signal and a combiner that combines the RF information signals to form a RF MFBMS signal. The receiver section and the transmitter section include ADCs and/or DACs, respectively, that are adjustable based upon characteristics of the RF MFBMS signal, the BB/IF MFBMS signal, and/or based upon signals carried therein, e.g., modulation type, SNR requirements, etc.

CROSS-REFERENCE TO PRIORITY APPLICATION

The present U.S. Utility patent application claims priority pursuant to35 U.S.C. §120, as a continuation, to the following U.S. Utility patentapplication which is hereby incorporated herein by reference in itsentirety and made part of the present U.S. Utility patent applicationfor all purposes:

1. U.S. Utility application Ser. No. 12/550,555 entitled “MultipleFrequency Band Information Signal Universal Front End with AdjustableADC(s),” filed Aug. 31, 2009, which will issue as U.S. Pat. No.8,412,142 on Apr. 2, 2013, which claims priority pursuant to 35 U.S.C.§119(e) to the following U.S. Provisional patent application which ishereby incorporated herein by reference in its entirety and made part ofthe present U.S. Utility patent application for all purposes:

-   -   a. U.S. Provisional Application Ser. No. 61/167,945 entitled        “Multiple Frequency Band Information Signal Universal Front End        with Adjustable ADC(s),” filed Apr. 9, 2009

BACKGROUND

1. Technical Field

The present invention relates generally to wide band wireless signaloperations; and more particular to wideband radio frequency operations.

2. Related Art

Communication systems are known to support wireless and wire linedcommunications between wireless and/or wire lined communication devices.Such communication systems range from national and/or internationalcellular telephone systems to the Internet to point-to-point in-homewireless networks. Each type of communication system is constructed, andhence operates, in accordance with one or more communication standards.For instance, wireless communication systems may operate in accordancewith one or more standards including, but not limited to, IEEE 802.11x,Bluetooth, wireless wide area networks (e.g., WiMAX), advanced mobilephone services (AMPS), digital AMPS, global system for mobilecommunications (GSM), North American code division multiple access(CDMA), Wideband CDMA, local multi-point distribution systems (LMDS),multi-channel-multi-point distribution systems (MMDS), radio frequencyidentification (RFID), Enhanced Data rates for GSM Evolution (EDGE),General Packet Radio Service (GPRS), and many others.

Depending on the type of wireless communication system, a wirelesscommunication device, such as a cellular telephone, two-way radio,personal digital assistant (PDA), personal computer (PC), laptopcomputer, home entertainment equipment, RFID reader, RFID tag, et ceteracommunicates directly or indirectly with other wireless communicationdevices. For direct communications (also known as point-to-pointcommunications), the participating wireless communication devices tunetheir receivers and transmitters to the same channel or channels (e.g.,one of the plurality of radio frequency (RF) carriers of the wirelesscommunication system or a particular RF frequency for some systems) andcommunicate over that channel(s). For indirect wireless communications,each wireless communication device communicates directly with anassociated base station (e.g., for cellular services) and/or anassociated access point (e.g., for an in-home or in-building wirelessnetwork) via an assigned channel. To complete a communication connectionbetween the wireless communication devices, the associated base stationsand/or associated access points communicate with each other directly,via a system controller, via the public switch telephone network, viathe Internet, and/or via some other wide area network.

For each wireless communication device to participate in wirelesscommunications, it includes a built-in radio transceiver (i.e., receiverand transmitter) or is coupled to an associated radio transceiver (e.g.,a station for in-home and/or in-building wireless communicationnetworks, RF modem, etc.). As is known, the receiver is coupled to anantenna and includes a low noise amplifier, one or more intermediatefrequency stages, a filtering stage, and a data recovery stage. The lownoise amplifier receives inbound RF signals via the antenna andamplifies then. The one or more intermediate frequency stages mix theamplified RF signals with one or more local oscillations to convert theamplified RF signal into baseband signals or intermediate frequency (IF)signals. The filtering stage filters the baseband signals or the IFsignals to attenuate unwanted out of band signals to produce filteredsignals. The data recovery stage recovers raw data from the filteredsignals in accordance with the particular wireless communicationstandard.

As is also known, the transmitter includes a data modulation stage, oneor more intermediate frequency stages, and a power amplifier. The datamodulation stage converts raw data into baseband signals in accordancewith a particular wireless communication standard. The one or moreintermediate frequency stages mix the baseband signals with one or morelocal oscillations to produce RF signals. The power amplifier amplifiesthe RF signals prior to transmission via an antenna.

Many wireless transceivers are able to support multiple communicationstandards, which may be in the same frequency band or in differentfrequency bands. For example, a wireless transceiver may supportBluetooth communications for a personal area network and IEEE 802.11communications for a Wireless Local Area Network (WLAN). In thisexample, the IEEE 802.11 communications and the Bluetooth communicationsmay be within the same frequency band (e.g., 2.4 GHz for IEEE 802.11b,g, etc.). Alternatively, the IEEE 802.11 communications may be in adifferent frequency band (e.g., 5 GHz) than the Bluetooth communications(e.g., 2.4 GHz). For Bluetooth communications and IEEE 802.11b, (g),etc. communications there are interactive protocols that appear to theuser as simultaneous implementation, but is actually a shared serialimplementation. As such, while a wireless transceiver supports multipletypes of standardized communications, it can only support one type ofstandardized communication at a time.

A transceiver that supports multiple standards includes multiple RFfront-ends (e.g., on the receiver side, separate LNA, channel filter,and IF stages for each standard and, on the transmitter side, separateIF stages, power amplifiers, and channels filters for each standard). Assuch, multiple standard transceivers include multiple separate RFfront-ends; one for each standard in a different frequency band, channelutilization scheme (e.g., time division multiple access, frequencydivision multiple access, code division multiple access, orthogonalfrequency division multiplexing, etc.), and/or data modulation scheme(e.g., phase shift keying, frequency shift keying, amplitude shiftkeying, combinations and/or variations thereof). Such multipletransceivers are fixed in that they can only support standards to whichthey were designed. The transceiver may also include separate basebandprocessing modules for each communication standard supported. Thus, as anew standard is released, new hardware may be needed for a wirelesscommunication device to support the newly released standard.

Therefore, a need exists for a transceiver that is capable of at leastpartially overcoming one or more of the above mentioned multiplestandard limitations.

BRIEF SUMMARY OF THE INVENTION

The present invention is directed to apparatus and methods of operationthat are further described in the following Brief Description of theDrawings, the Detailed Description of the Invention, and the claims.Other features and advantages of the present invention will becomeapparent from the following detailed description of the invention madewith reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a system diagram illustrating a wireless communication systemconstructed and operating according to one or more embodiments of thepresent invention;

FIG. 2 is a illustrating the power spectral density of a Radio Frequency(RF) Multiple Frequency Bands Multiple Standard (MFBMS) signal andcomponents of a wireless device that operates thereupon according to oneor more embodiments of the present invention;

FIG. 3 is a diagram illustrating power spectral densities of a RF MFBMSsignal and a Baseband/Intermediate frequency (BB/IF) MFBMS signalconstructed and operated on according to one or more embodiments of thepresent invention;

FIG. 4A is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention;

FIG. 4B is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention;

FIG. 4C is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention;

FIG. 4D is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention;

FIG. 5 is a flow chart illustrating receive operations according to oneor more embodiments of the present invention;

FIG. 6 is a flow chart illustrating transmit operations according to oneor more other embodiments of the present invention;

FIG. 7 is a block diagram illustrating the structure of a receiverportion of a wireless device constructed according to one or moreembodiments of the present invention;

FIG. 8 is a block diagram illustrating the structure of a transmitterportion of a wireless device constructed according to one or moreembodiments of the present invention;

FIG. 9 is a block diagram illustrating receiver and transmitter portionsof a wireless device constructed according to another embodiment of thepresent invention utilizing a super heterodyne architecture;

FIG. 10 is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention;

FIG. 11A is a diagram illustrating power spectral densities of a RFMFBMS signal and a BB/IF MFBMS signal constructed and operated onaccording to one or more embodiments of the present invention;

FIG. 11B is a diagram illustrating power spectral densities of a RFMFBMS signal and a BB/IF MFBMS signal constructed and operated onaccording to one or more embodiments of the present invention;

FIG. 11C is a diagram illustrating power spectral densities of a RFMFBMS signal and a BB/IF MFBMS signal constructed and operated onaccording to one or more embodiments of the present invention;

FIG. 11D is a diagram illustrating power spectral densities of a RFMFBMS signal and a BB/IF MFBMS signal constructed and operated onaccording to one or more embodiments of the present invention;

FIG. 12 is a flow chart illustrating receive operations according to oneor more embodiments of the present invention;

FIG. 13 is a flow chart illustrating transmit operations according toone or more embodiments of the present invention;

FIG. 14A is a block diagram illustrating a receiver section of awireless device constructed according to one or more embodiments of thepresent invention;

FIG. 14B is a block diagram illustrating a receiver section of awireless device constructed according to one or more embodiments of thepresent invention;

FIG. 14C is a block diagram illustrating a portion of a wireless deviceconstructed according to one or more embodiments to the presentinvention;

FIG. 15A is a block diagram illustrating a transmitter section of awireless device constructed according to one or more embodiments of thepresent invention;

FIG. 15B is a block diagram illustrating a transmitter section of awireless device constructed according to one or more embodiments of thepresent invention;

FIG. 16A is a block diagram illustrating a transmitter section of awireless device constructed according to another embodiment of thepresent invention;

FIG. 16B is a block diagram illustrating a transmitter section of awireless device constructed according to another embodiment of thepresent invention;

FIG. 17A is a block diagram illustrating an adjustable Low NoiseAmplifier (LNA) constructed according to one or more embodiments of thepresent invention;

FIG. 17B is a block diagram illustrating another adjustable LNAconstructed according to one or more embodiments of the presentinvention;

FIG. 18A is a block diagram illustrating the construct of an adjustableLNA according to one or more embodiments of the present invention;

FIG. 18B is a block diagram illustrating the construct of anotheradjustable LNA according to one or more embodiments of the presentinvention;

FIGS. 19A and 19B are frequency response curves showing the variousfrequency responses of frequency adjustable analog signal pathcomponents constructed according to embodiments of the presentinvention;

FIGS. 20A and 20B illustrate various frequency response curves ofadjustable analog signal path components with respect to an RF MFBMSsignal according to one or more aspects of the present invention;

FIG. 21 is a flow chart illustrating receive operations according to oneor more embodiments of the present invention;

FIG. 22 is a flow chart illustrating operation of a receiver section forreceiving processing of an RF MFBMS signal according to one or moreembodiments of the present invention;

FIG. 23 is a flow chart illustrating operation of a wireless device fortransmission according to one or more embodiments of the presentinvention;

FIG. 24 is a flow chart illustrating operations of a wireless deviceduring transmission according to one or more embodiments of the presentinvention;

FIG. 25 is a flow chart illustrating operation for adjusting ADCparameters according to one or more embodiments of the presentinvention;

FIG. 26 is a flow chart illustrating operations for receiving an RFMFBMS signal and operating thereupon using adjustable ADC componentsaccording to one or more embodiments of the present invention;

FIG. 27 is a flow chart illustrating operations according to one or moreembodiments of the present invention for adjusting ADC tuningparameters;

FIG. 28 is a block diagram illustrating an ADC constructed and operatingaccording to one or more embodiments of the present invention; and

FIGS. 29A and 29B are power spectral representations illustratinginbound BB/IF MFBMS signals and frequency responses of ADCs operatingthereupon according to one or more embodiments of the present invention.

DETAILED DESCRIPTION OF THE DRAWINGS

FIG. 1 is a system diagram illustrating a wireless communication systemconstructed and operating according to one or more embodiments of thepresent invention. The wireless communication system 100 of FIG. 1includes a communication infrastructure and a plurality of wirelessdevices. The communication infrastructure includes one or more cellularnetworks 104, one or more wireless local area networks (WLANs) 106, andone or more wireless wide area networks (WWANs) 108. The cellularnetworks 104, WLANs 106, WWANs 108 all typically couple to one or morebackbone networks. The backbone networks 102 may include the Internet,the Worldwide Web, one or more public switched telephone networkbackbones, one or more cellular network backbones, one or more privatenetwork backbones and/or other types of backbones that supportcommunications with the various wireless network infrastructures 104,106, and 108. Server computers may couple to these various networkinfrastructures. For example, server computer 110 couples to cellularnetwork 104, web server 112 couples to the Internet/WWW/PSTN/Cellnetwork 102, and server 114 couples to WWAN network 108. Other devicesmay couple to these networks as well in various other constructs.

Each of the cellular networks 104, WLANs 106, and WWANs 108 supportwireless communications with wireless devices in various wirelessspectra and according to various communication protocol standards. Forexample, the cellular network 104 may support wireless communicationswith wireless devices within the 800 MHz band and the 1900 MHz band,and/or other Radio Frequency (RF) bands that are allocated for cellularnetwork communications. The cellular network 104 may support GSM, EDGE,GPRS, 3G, CDMA, TDMA, and/or various other standardized communications.Of course, these are examples only and should not be considered to limitthe spectra or operations used by such cellular networks. The WLANs 106typically operate within the Industrial, Scientific, and Medical (ISM)bands that include the 2.4 GHz and 5.8 GHz bands. The ISM bands includeother frequencies as well that support other types of wirelesscommunications, such bands including the 6.78 MHz, 13.56 MHz, 27.12 MHz,40.68 MHz, 433.92 MHz, 915 MHz, 24.125 GHz, 61.25 GHz, 122.5 GHz, and245 GHz bands. The WWANs networks 108 may operate within differing RFspectra based upon that which is allocated at any particular locale.Device to device communications may be serviced in one of thesefrequency bands as well.

The wireless network infrastructures 104, 106, and 108 supportcommunications to and from wireless devices 116, 118, 122, 124, 126,128, 130, 132, and/or 136. Various types of wireless devices areillustrated. These wireless devices include laptop computers 116 and118, desktop computers 122 and 124, cellular telephones 126 and 128,portable beta terminals 130, 132, and 136. Of course, differing types ofdevices may be considered wireless devices within the context of thescope of the present invention. For example, automobiles themselveshaving cellular interfaces would be considered wireless devicesaccording to the present invention. Further, any device having awireless communications interface either bi-directional oruni-directional, may be considered a wireless device according to thepresent invention, in various other types of wireless devices. Forexample, wireless devices may include Global Positioning System (GPS)receiving capability to receive positioning signals from multiple GPSsatellites 150.

The wireless devices 116-136 may support peer-to-peer communications aswell, such peer-to-peer communications not requiring the support of awireless network infrastructure. For example, these devices maycommunicate with each other in a 60 GHz spectrum, may use a peer-to-peercommunications within a WLAN spectrum, for example, or may use othertypes of peer-to-peer communications. For example, within the ISMspectra, wireless devices may communicate according to Bluetoothprotocol or any of the various available WLAN protocols supported byIEEE802.11x, for example.

Various aspects of the present invention will be described furtherherein with reference to FIGS. 2-16B. According to these aspects, one ormore of the wireless devices includes a wide band RF receiver, RFtransmitter, and/or RF transceiver. The RFreceiver/transmitter/transceiver does not require multiple differingtransceivers to support communications within differing frequency bandsand/or according to different communication standards. While priorwireless devices that supported communications with cellular networkinfrastructure 104 and wireless network infrastructure 106 requiredseparate RF transceivers, devices constructed and operating according toembodiments of the present invention do not. According to embodiments ofthe present invention, a single RF transceiver may be used to supportcommunications within differing RF spectra and according to differingcommunication standard protocols. As will be described further withreference to FIG. 2, a signal that encompasses multiple frequency bandsand multiple communication standards is referred to as a multiplefrequency band multiple standards (MFBMS) signal. According to thepresent invention, the wireless devices include an RF transmitter and/orRF receiver that support communications using such MFBMS signals.

FIG. 2 is a combination block and signal diagram illustrating thestructure of a RF MFBMS signal and components of a wireless device thatoperates thereupon according to one or more embodiments of the presentinvention. A RF MFBMS signal resides within an MFBMS spectrum 200. TheMFBMS signal includes information signals within a plurality offrequency bands 202A, 202B, and 202C. Each of the information signalsresides within one or more channels 204A, 204B, and 204C ofcorresponding frequency bands 202A, 202B, and 202C, respectively. As isshown, each frequency band 202A may include a plurality of channels. Forexample, frequency band 202A includes channel 204A, frequency band 202Bincludes channel 204B, and frequency band 202C includes channel 204C.The inbound RF MFBMS signal 256 in the example of FIG. 2 includes threediffering frequency bands 202A, 202B, and 202C. However, with otherembodiments of the present invention, one or more of the frequency bands202A, 202B, and 202C may include a single wideband channel. Suchwideband channel aspect may be applied to any of the information signalbands described further herein. In one particular example, thesefrequency bands may include cellular communication frequency bands, WLANfrequency bands, wireless personal area network (WPAN) frequency bands,global positioning system (GPS) frequency bands, 60 gigahertz/millimeterwave frequency bands, and other frequency bands.

Components of a wireless device illustrated in FIG. 2 include atransceiver 250 and baseband processing module 260. Transceiver 250includes receiver section 252 and transmitter section 254. The receiversection 252 receives the inbound RF MFBMS signal 256 and produces a downconverted signal 258 to baseband processing module 260. The downconverted signal 258 may be a Baseband/Intermediate Frequency (BB/IF)MFBMS signal. The baseband processing module 260 operates upon the downconverted signal 258 to produce inbound data 262. Such inbound data 262may simply include data that has been extracted from one or moreinformation signals carried within the inbound RF MFBMS signal 256.

Likewise, the baseband processing module 260 receives outbound data 264and operates on the outbound data to produce an outbound signal 266,which may be an outbound BB/IF MFBMS signal. The outbound BB/IF MFBMSsignal 266 is received by transmitter section 254 and converted toproduce an outbound RF MFBMS signal 268. The RF MFBMS signal 268 istransmitted via an antenna.

FIG. 3 is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention. Operations thatproduce or operate upon the RF MFBMS and BB/IF MFBMS signals of FIG. 3may be performed by any of the various wireless devices illustrated inFIG. 1, in corresponding receiver sections and/or transmitter sections.As is shown, an RF MFBMS signal 300 resides within an RF MFBMS spectrum310. The BB/IF MFBMS signal 360 resides within a BB/IF MFBMS spectrum350. The RF MFBMS signal 300 and/or the BB/IF MFBMS signal 360 mayeither be an inbound or outbound MFBMS signal. Up conversion operations331 and down conversion operations 330 according to the presentinvention are used to form and operate upon the RF MFBMS signal 300,respectively. Down conversion operations 330 produce the BB/IF MFBMSsignal 360 from the incoming RF MFBMS signal 300. Up conversionoperations 331 produce the RF MFBMS signal 300 from the BB/MFBMS signal360.

The RF MFBMS signal 300 includes information signals 302, 304, 306, and308 that reside within a plurality of corresponding frequency bands. Theinformation signal frequency bands are centered at F_(C1), F_(C2),F_(C3), and F_(C4) and have respective information signal bandwidths.These bandwidths may be dedicated, frequency division multiplexed, timedivision multiplexed, code division multiplexed, or combinationallymultiplexed. The width of these respective frequency bands depends upontheir spectral allocation, typically defined by a country or region,e.g., United States, North America, South America, Europe, etc. Each ofthese frequency bands may be divided into channels. However, some ofthese frequency bands may be wide-band allocated and not furthersub-divided.

Each of these information signals 302, 304, 306, and 308 was/is formedaccording to a corresponding communication protocol and corresponds to aparticular type of communication system. For example, band 1 may be acellular band, band 2 may be a WLAN band, band 3 may be another cellularband, and band 4 may be a 60 GHz/MMW band. In differing embodiments,these bands may be GPS band(s) and/or WWAN bands, among other bands. Aninformation signal band may carry bi-directional communications that maybe incoming or outgoing. When the information signals areunidirectional, such as with Global Positioning System (GPS) signals,the GPS band will be present only in an incoming RF MFBMS signal but notin an outgoing RF MFBMS signal.

With the MFBMS signals of FIG. 3, all information signals residingwithin the RF MFBMS spectrum 310 are down converted to producecorresponding information signals within the BB/IF MFBMS spectrum 350.Likewise, all information signals residing within the BB/IF spectrum 350are up converted to produce corresponding information signals within theRF MFBMS spectrum 310. Thus, as illustrated in FIG. 3, each of theinformation signals of the RF MFBMS signal 300 have correspondinginformation signals in the BB/IF MFBMS signal 360, which carry identicalinformation in a same signal format but at different frequencies.Generally, FIG. 3 illustrates a simple down conversion of a wide bandsignal and a simple up conversion of a wideband signal. In otherembodiments, as will be described further herein, not all informationsignals of the RF MFBMS signal have corresponding information signals inthe BB/IF MFBMS signal.

FIG. 4A is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention. As compared to FIG. 3,down conversion operations 400 of FIG. 4A produce a differing BB/IFMFBMS signal 402 from the RF MFBMS signal 300 as compared to the BB/IFMFBMS signal 360 of FIG. 3. With the example of FIG. 4A, informationsignals 302, 304, 306, and 308 resides within the RF MFBMS spectrum 310.Each of these information signals 302, 304, 306, and 308 has acorresponding component in the BB/IF MFBMS signal 402. However, ascompared to the spectral position of the information signals 302, 304,306, and 308 of the BB/IF MFBMS signal 360 of FIG. 3, the informationsignals 302, 304, 306, and 308 of the BB/IF MFBMS signal 402 of FIG. 4Areside at differing spectral positions. Such is the case because thedown conversion operations 400 of FIG. 4A use a differing shiftfrequency than do the down conversion operations 330 of FIG. 3. In suchcase, a frequency shift signal used by one or more mixing components ofa wireless device performing the down conversion operations 400 differsbetween the embodiments of FIG. 3 and FIG. 4A.

Thus, within the BB/IF MFBMS spectrum 404 of FIG. 4A, informationsignals 302 and 304 reside left of 0 Hz frequency while informationsignals 306 and 308 reside right of 0 Hz frequency. Within a wirelessdevice performing the down conversion operations 400 of FIG. 4A, thewireless device may implement band pass (high pass) filtering usingfilter spectrum 406 to remove information signal 302 and 304 componentsless than 0 Hz while leaving information signal 306 and 308 components.Such filtering may be done using analog filter(s) and/or digitalfilter(s). Digital filtering using the filter spectrum 406 may be doneby the baseband processing module. After such filtering operations, onlyinformation signals 306 and 308 have corresponding components within theBB/IF MFBMS signal 402. The baseband processing module then operatesupon the BB/IF MFBMS signal 402 to extract data there from. According tothe present invention, the baseband processing module may extract datafrom both/either information signals 306 and 308.

FIG. 4B is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention. The power spectraldensities of the BB/IF MFBMS signal 412 of FIG. 4B differ from those ofFIGS. 3 and 4A while the power spectral density of the RF MFBMS signal300 of FIG. 4B is same/similar to that of FIGS. 3 and 4A.

Down conversion operations 410 convert the RF MFBMS signal 300 to theBB/IF MFBMS signal 412. The down conversion operations 410 are performedusing a shift frequency that causes the information signals 302, 304,306, and 308 to reside at particular locations within the baseband BB/IFMFBMS spectrum 414 with respect to 0 Hz. As contrasted to the downconversion operations 330 of FIG. 3 and to the down conversionoperations 400 of FIG. 4A, the down conversion operations 410 of FIG. 4Buse a differing shift frequency. With the down conversion shiftfrequency used with FIG. 4B, information signal 304, information signal306, and information signal 308 have corresponding signal components atfrequencies greater than 0 Hz within the BB/IF MFBMS signal 412 whileinformation signal 302 has components below 0 Hz within the BB/IF MFBMSsignal 412. Applying a filter operation using filter spectrum 416, e.g.In pass filter, information signal 302 component of BB/IF MFBMS signal452 is removed. After this filtering operation only information signals304, 306, and 308 reside within the BB/IF MFBMS signal 412 and areavailable for data extraction there from by the baseband processingmodule.

FIG. 4C is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention. The power spectraldensities of the BB/IF MFBMS signal 420 and the RF MFBMS signal 426 ofFIG. 4C differ from those of FIGS. 3, 4A, and 4B.

Present in a BB/IF MFBMS signal 420 are information signals 430 and 432residing within respective information signal bands of a BB/IF MFBMSspectrum 422. Up conversion operations 424 convert the BB/IF MFBMSsignal 420 to the RF MFBMS signal 426. The up conversion operations 424are performed using a shift frequency that causes the informationsignals 430 and 432 to reside at particular frequency bands/centerfrequencies within the RF MFBMS spectrum 428. As contrasted to the upconversion operations 331 of FIG. 3, the up conversion operations 424 ofFIG. 4C use a differing shift frequency. The shift frequency chosen forthe up conversion operations 424 of FIG. 4C is based upon the spectralposition of information signals 430 and 432 within the BB/IF MFBMSsignal 420 and the desired spectral positions of the information signals430 and 432 within the RF MFBMS signal 426. Note that the RF MFBMSspectrum 428 is empty except for the position of the information signals430 and 432. Such is the case because the corresponding wireless deviceonly outputs communication signals at these spectral positions, Band_(x)and Band_(y).

FIG. 4D is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention. The power spectraldensities of the BB/IF MFBMS signal 450 and the RF MFBMS signal 456 ofFIG. 4D differ from those of FIGS. 3, 4A, 4B, and 4C.

Present in a BB/IF MFBMS signal 450 of a BB/IF MFBMS spectrum 452 areinformation signals 458, 460, and 462 at respective positions. Upconversion operations 454 convert the BB/IF MFBMS signal 450 to the RFMFBMS signal 456. The up conversion operations 454 are performed using ashift frequency that causes the information signals 458, 460, and 462 toreside at particular frequency bands/center frequencies within the RFMFBMS spectrum 464. As contrasted to the up conversion operations 331 ofFIG. 3 and the up conversion operations 424 of FIG. 4C, the upconversion operations 454 of FIG. 4D use a differing shift frequency.The shift frequency chosen for the up conversion operations 454 of FIG.4D is based upon the spectral position of information signals 458, 460,and 462 within the BB/IF MFBMS signal 450 and the desired spectralpositions of the information signals 458, 460, and 462 within the RFMFBMS signal 456. Note that the RF MFBMS signal 456 within the RF MFBMSspectrum 464 is empty except for the position of the information signals458, 460, 462, and 464. Such is the case because the correspondingwireless device only outputs these information signals.

FIG. 5 is a flow chart illustrating operations according to one or moreembodiments of the present invention. The operations 500 of FIG. 5commence with a wireless device determining a set of information signalsfor receipt (Step 502). The set of information signals for receipt arecarried by an RF MFBMS signal that includes a plurality of informationsignal residing within corresponding information signal frequency bands.Referring again to FIG. 3, information signals 302, 304, 306, and 308form the RF MFBMS signal 300. With the operation of Step 502, thewireless device may identify all of these information signals forreceipt or only a portion of these information signals for receipt. Theinformation signals may carry an inbound portion of a bi-directionalcommunication, a GPS signal, a broadcast signal, or another type ofsignal. As was previously described,

Referring again to FIG. 5, after Step 502 is completed, the wirelessdevice determines the RF frequency bands of the signals of interestwithin the RF MFBMS signal 300. For example, referring to FIG. 3, thewireless device may determine that it is interested in informationsignals 306 and 308. In another operation, the wireless device maydetermine that it is interested in only information signals 302 and 304.In still another operation, the wireless device may determine that it isinterested in information signals 302, 304, and 306.

Next, referring again to FIG. 5, the wireless device determines thedesired BB/IF frequency band(s) for positioning of the informationsignals for data extraction operations (Step 506). For example,referring to FIG. 4A, the wireless device determines that it willextract data from information signals 306 and 308. The wireless devicethen decides that it would like to have the information signals 306 and308 reside at corresponding positions within the BB/IF MFBMS spectrum404. Likewise, with reference to FIG. 4B, the wireless device determinesthat it is interested in information signals 304, 306, and 308 anddetermines the positions for these information signals within the BB/IFMFBMS spectrum 404. A differing determination would be made for theexample of FIG. 3. The wireless device makes this determination at Step506 of FIG. 5.

Based upon the RF frequency bands of the signals of interest for receiptand the desired BB/IF MFBMS frequency bands, the wireless device thendetermines a shift frequency (Step 508). With the examples of FIGS. 3,4A, and 4B, various BB/IF MFBMS signals 360, 402, and 412 areillustrated. These BB/IF MFBMS signals 360, 402, and 412 requirediffering shift frequencies for respective down conversion operations330, 400, and 410 to cause the information signals to reside withindesired spectra. The wireless device, at Step 508, determines the shiftfrequency that will result in the information signals being downconverted from the RF MFBMS spectrum to reside at desired positions inthe BB/IF MFBMS spectrum.

Operation 500 continues with the wireless device down converting the RFMFBMS signal to produce the BB/IF MFBMS signal using the shift frequencydetermined at Step 508 (Step 510). Then, the wireless device filters theBB/IF MFBMS signal to remove undesired spectra (Step 512). Examples ofsuch filtering operations are illustrated in FIGS. 4A and 4B usingfilter spectrums 406 and 416, respectively. Finally, the wireless deviceextracts data from the desired information signals of the filtered BB/IFMFBMS signal (Step 514).

With the operations 500 of FIG. 5, an RF receiver section of thewireless device performs differing operations for differing sets ofinformation signals for receipt within the RF MFBMS signal. For example,for a first set of information signals of the RF MFBMS signals forreceipt, the RF receiver section down converts the RF MFBMS signal by afirst shift frequency to produce the BB/IF MFBMS signal. Further, for asecond set of information signals of the RF MFBMS signal for receipt,the RF receiver section down converts the RF MFBMS signal by a secondshift frequency to produce the BB/IF MFBMS signal, wherein the secondshift frequency differs from the first shift frequency. The basebandprocessing module 260 of FIG. 2 for example, processes the BB/IF MFBMSsignal to extract data there from.

The illustrated example of the operations 500 of FIG. 5 may be extendedfor a third set of information signals of the RF MFBMS signal. In suchcase, for a third set of information signals that differs from the firstand second sets of information signals, the wireless device determines athird shift frequency that differs from both the first and second shiftfrequencies. The RF receiver section then down converts the RF MFBMSsignal to produce the BB/IF MFBMS signal that has a third frequencyspectra as compared to the differing first and second frequencyspectras. Referring to all of FIGS. 3, 4A, and 4B, the three differingfrequency shift examples are shown. For example, with the operations ofFIG. 3, a first shift frequency produces a first BB/IF MFBMS signal 360,with the second shift frequency of FIG. 4A, down conversion operations400 produce BB/IF MFBMS signal 402, and with the third shift frequencyof FIG. 4B, down conversion operations 410 produce a BB/IF MFBMS signal412 that differs from both the spectras of FIGS. 3 and 4A. As was shownin FIGS. 4A and 4B, high pass filter operations using filter spectrums406 and 416, respectively, remove at least one information signalfrequency band from the BB/IF MFBMS spectrums.

With various operations according to FIG. 5, the first informationsignal frequency band of the RF MFBMS signal may include a WLAN signal,a WPAN signal, a cellular signal, GPS signal, a MMW signal, a WWANsignal, and/or another type of information signal. These variousinformation signals may be bidirectional communication signals or may beunidirectional communication signals such as GPS communication signals.Thus, according to the present invention, the wireless device receivesinformation signals in multiple frequency bands and down converts themusing a single down conversion operation to produce the BB/IF MFBMSsignal. The down conversion operations use a shift frequency that isbased upon not only the positions of the information signals within theRF MFBMS spectrum but also the desired positions of the informationsignals within the BB/IF MFBMS signal. Further, the down conversionshift frequency will also be determined by whether or not the wirelessdevice can move some information signals below 0 Hz in the BB/IF MFBMSspectrum so that they can be easily filtered prior to data extractionoperations.

FIG. 6 is a flow chart illustrating operations according to one or moreother embodiments of the present invention. Transmit operations 600 of awireless device are illustrated in FIG. 6. The transmit operations 600include the wireless device first determining RF frequency bands of RFMFBMS signals of interest (Step 602). The wireless device thendetermines the location of signals of interest that will be createdwithin the BB/IF frequency band (Step 604). For example, in someoperations, the wireless device, in particular a baseband processingmodule, positions information signals in first spectral positions withina BB/IF MFBMS signal, see e.g., FIG. 4C, while in a second operation thewireless device positions the information signals in second spectralpositions within the BB/IF signal, see e.g., FIG. 4D.

Then, the wireless device determines a shift frequency based upon the RFfrequency bands and BB/IF frequency bands of the signals of interest(Step 606). The baseband processor then modulates the data to create theBB/IF MFBMS signal (Step 608). The wireless device, particularly an RFtransmitter section of the wireless device, up converts the BB/IF MFBMSsignal to produce the RF MFBMS signal (Step 610). The wireless devicemay then filter the BB/IF MFBMS signals to remove undesired spectra(Step 612).

With particular reference to FIG. 4C, a baseband processing module of awireless device produces information signals 430 and 432 in particularcorresponding locations within BB/IF MFBMS signal 420. The wirelessdevice then determines at what frequencies the information signals 430and 432 are to reside within the RF MFBMS signal 426. Then, based uponthese frequencies, the wireless device determines a corresponding shiftfrequency and then performs up conversion operations 424 to produce theRF MFBMS signal 426. With particular reference to FIG. 4D, a basebandprocessing module of a wireless device produces information signals 458,460, and 462 in particular corresponding locations within BB/IF MFBMSsignal 450. The wireless device then determines at what frequencies theinformation signals 458, 460, and 462 are to reside within the RF MFBMSsignal 456. Then, based upon these frequencies, the wireless devicedetermines a corresponding shift frequency and then performs upconversion operations 454 to produce the RF MFBMS signal 456. Note thatthe operations producing the signals of FIG. 4C differ from theoperations producing the signals of FIG. 4D with differing shiftfrequencies used. Parallels between the operations of FIGS. 6 and 7 maybe drawn with regard to differing shift frequencies used at differingtimes based upon the information signals desired for transmission.

FIG. 7 is a block diagram illustrating the structure of a receiverportion of a wireless device constructed according to one or moreembodiments of the present invention. The components illustrated arethose of a RF receiver section 252 of a wireless device. The RF receiversection 252 components are operable to support the operations previouslydescribed with reference to FIGS. 3, 4A, 4B, and 5. The receiver section252 receives an incoming RF MFBMS signal via antenna 702. The receiversection 252 includes low noise amplifier (LNA) 704, optional filter 706,mixer 708, filter 710, analog-to-digital converter (ADC) 714, and localoscillator (LO) 718. The baseband processing module 260 receives theBB/IF MFBMS signal from receiver section 252.

With the embodiment of FIG. 7, baseband processing module 260 providesinput to LO 718 that causes the LO to produce a particular shiftfrequency. At differing times, the wireless device, particularly thebaseband processing module 260, causes the LO to produce differing shiftfrequencies. In performing these operations, baseband processing module260 executes some of the operations of FIG. 5. LNA 704, filter 706,mixer 706, filter 710, and ADC 714 may be tunable to have differingfrequency transfer characteristics based upon the frequency of thesignals of interest and the shift frequency. LO 718 receives anoscillation from crystal oscillator 720 and generates the shiftfrequency based there upon.

The various components of the receiver section 252 may be adjustablebased upon either/both characteristics of the RF MFBMS signal and theBB/IF signal. In such case, the processing circuitry 260 firstdetermines the set of information signals for receipt. The set ofinformation signals are carried by the RF MFBMS signal within theplurality of information signal frequency bands. The processingcircuitry 260 determines the shift frequency based upon thedetermination of the set of information signals for receipt and desiredBB/IF frequencies of the down converted signal. The antenna 702 receivesthe RF MFBMS signal. The receiver section 252 includes down conversioncircuitry 708 that down converts the RF MFBMS signals by the shiftfrequency to produce the BB/IF MFBMS signal.

The receiver section 252 further includes at least one adjustable analogsignal path component operable to adjust at least one of the RF MFBMSsignal and the BB/IF MFBMS signal. The at least one adjustable signalpath component may include the LNA 704. In such embodiment, theadjustable LNA 704 is adjustable based upon a frequency band of interestof the RF MFBMS signal and/or other characteristics of the RF MFBMSsignal, e.g., modulation type, SNR requirements, etc. Thus, the LNA 704may be gain adjustable as well. The adjustable analog signal pathcomponent may also or alternatively be an analog filter 706 thatoperates upon the RF MFBMS signal. The analog filter 706 is frequencyand/or gain adjustable based upon a frequency band of interest of the RFMFBMS signal. Generally, the adjustable filter 706 is a band pass signalthat operates upon a particular frequency band of interest of the RFMFBMS signal. As was previously described and as will be subsequentlydescribed, the bandwidth and gain of the adjustable filter 706 will beestablished to correspond to one or more information signal bands ofinterest of the RF MFBMS signal. The at least one adjustable analogsignal path component may also or alternatively be an analog filter 710that operates upon the BB/IF MFBMS signal. The analog filter 710 isfrequency adjustable based upon a frequency band of the correspondingBB/IF MFBMS signal. Particularly, the filter 710 may be a band passfilter, a low pass filter, or a high pass filter whose bandcharacteristics and gain are adjusted based upon input from the basebandprocessing module 260 for the corresponding BB/IF MFBMS signal.Moreover, the down conversion circuitry 708 may also be bandwidthadjustable based upon one or more of the RF MFBMS signal characteristicsand/or the BB/IF MFBMS signal characteristics. In some operations, thedown conversion circuitry will down convert all of the RF/MFBMS signalsfor subsequent use. However, in other embodiments, only a particularband of interest of the RF MFBMS signal is of interest as BB/IF MFBMSsignal. In such case, band characteristics and gain characteristicsother down conversion circuitry 708 are adjusted such that only portionsof interest of the signal are focused on with such operation. Moreover,local oscillator 718 may also be adjusted based upon the particularfrequency or other characteristics of the RF MFBMS signal and/or theBB/IF MFBMS signal operated upon by the receiver section 252.

Referring still to FIG. 7, the ADC 714 is operable to digitize the BB/IFMFBMS signal produced by filter 710. According to another aspect of thepresent invention, the ADC 714 is tunable by the processing circuitry260 based upon spectral characteristics to BB/IF MFBMS signal.Particular manners in which the ADC 714 may be tuned will be describedfurther herein with reference to FIG. 14A and the reader is referencedthereto. Stated simply however, the baseband processing module 260alters one or more of the sample rate, bandwidth, dynamic range, and/orsignal to noise ratio of the ADC 714 based upon the spectralcharacteristics of the BB/IF MFBMS signal. By altering thesecharacteristics of the ADC 714, the power consumption of the ADC 714 maybe reduced when full resolution/full performance of the ADC 714 is notrequired. Such reduction in power consumption of ADC 714 is particularlyimportant for battery powered wireless devices such as thosecontemplated according to the present invention.

FIG. 8 is a block diagram illustrating the structure of a transmitterportion of a wireless device constructed according to one or moreembodiments of the present invention. The transmitter section 254couples to baseband processing module 260 and to antenna 702/812. Thetransmitter section and receiver section of a wireless device may sharea single antenna or may use differing antennas. Further, in differingembodiments, the wireless device may include multiple antennas that arecoupled to the transmitter section and receiver section via antennacoupling.

The baseband processing module 260 produces a BB/IF MFBMS signal totransmitter section 254. The transmitter section 254 includes adigital-to-analog controller (DAC) 802, filter 804, mixer 806, filter808, and power amplifier (PA) 810. The output of PA 810 (RF MFBMSsignal) is provided to antenna 702/812 for transmission. The LO 812produces a shift frequency based upon inputs from baseband processingmodule 260 and a crystal oscillation signal received from crystaloscillator 720.

In its operation, the transmitter section 254 up converts the BB/IFMFBMS signal to the RF MFBMS signal based upon a shift frequency asdetermined by input received from baseband processing module 260. The PA810, filter 808, mixer 806, filter 804, and/or DAC 802 may be frequencytunable with the tuning based upon the frequency band of the BB/IF MFBMSsignal and the frequency spectra of the RF MFBMS signal. LO 812 is alsotunable to produce differing shift frequencies over time. In someembodiments, the receiver section 252 and the transmitter section 254may share an LO.

Each of the analog signal path components of the transmitter section maybe frequency adjustable. The processing circuitry may determine at leastone setting to be applied to each of the frequency adjustable analogsignal path components 810, 808, 806, and 804. In such case, theprocessing circuitry 260 will determine the settings for the adjustableanalog signal path components based upon the BB/IF information signaland the RF MFBMS signal.

The adjustable analog signal path component may include a frequencyadjustable PA 810 whose frequency response is adjusted based upon afrequency band of interest of the RF MFBMS signal. Further, the at leastone adjustable analog signal path component may be an analog filter 808that operates upon the RF MFBMS signal and that is frequency bandadjustable based upon frequency content of the RF MFBMS signal, e.g.,based upon at least one frequency band of interest of the RF MFBMSsignal.

The adjustable analog signal path component may be an adjustable analogfilter 804 that operates upon the BB/IF MFBMS signal. In such case, theanalog filter 804 is frequency adjustable based upon a frequency band ofthe corresponding BB/IF MFBMS signal. Finally, the up conversioncircuitry 806 may be bandwidth adjusted by the baseband processingmodule 260 based upon the characteristics of one or more of the BB/IFMFBMS signal and the RF/IF MFBMS signal.

FIG. 9 is a block diagram illustrating receiver and transmitter portionsof a wireless device constructed according to another embodiment of thepresent invention utilizing a super heterodyne architecture. With thestructure of FIG. 9, up conversion operations from BB/IF to RF and downconversion operations from RF to BB/IF are performed in multiple stages.The structure of FIG. 9 may be employed with any of the operations ofthe present invention.

The receiver section 252 includes first mixing stage 904 and secondmixing stage 906. The first mixing stage 904 receives a crystaloscillation from local oscillator 720, the RF MFBMS signal from antenna902, and one or more shift frequency control inputs from the basebandprocessing module 260. The first mixing stage 904 performs a first downconversion operation based upon input signal F_(s1). The output of firstmixing stage 904 is received by second mixing stage 906 that performs asecond down conversion operation based upon the shift frequency F_(s2).The output of the second mixing stage 906 is the BB/IF MFBMS signal thatis received by baseband processing module 260. Baseband processingmodule 260 extracts data from information signals contained within theBB/IF MFBMS signal.

On the transmit side, transmitter section 254 receives BB/IF MFBMSsignal from baseband processing module 260. The first mixing stage 908up converts by a third shift frequency F_(o) the BB/IF MFBMS signal. Theup converted signal produced by the first mixing stage 908 is receivedby second mixing stage 910 that performs a second up conversionoperation on the signal and produces an RF MFBMS signal. The RF MFBMSsignal is output to antenna 912 with the embodiment of FIG. 9. Howeveras was previously described, differing embodiments of wireless deviceconstructed according to the present invention may include multipleantennas and/or may include the receiver section 252 and transmittersection 254 sharing one or more antennas.

FIG. 10 is a diagram illustrating power spectral densities of a RF MFBMSsignal and a BB/IF MFBMS signal constructed and operated on according toone or more embodiments of the present invention. In particular, powerspectral densities of a RF MFBMS signal 300 and a BB/IF MFBMS signal1004 are shown. The RF MFBMS signal 300 includes information signals302, 304, 306, and 308 within RF MFBMS spectrum 310. Each of theseinformation signals 302, 304, 306, and 308 resides within correspondinginformation signal bands centered at corresponding center frequencies.

While the RF MFBMS signal 300 of FIG. 10 is similar to that which isillustrated in FIGS. 3, 4A, and 4B, the corresponding BB/IF MFBMS 1004is not. As contrasted to the power spectral densities of the BB/IF MFBMSsignals of FIGS. 3, 4A, and 4B, the down conversion operations 1002 ofFIG. 10 result in band compression such that the information signals302, 304, 306, and 308 of the BB/IF MFBMS signal 1004 have a differingfrequency band separation than do the corresponding information signalsof FIGS. 3, 4A, and 4B. The information signals 302, 304, 306, and 308of the RF MFBMS signal 300 have a first frequency band separation. Theinformation signals 302, 304, 306, and 308 of the BB/IF MFBMS signal1004 have a second frequency band separation that differs from the firstfrequency band separation. The down conversion operations 1002 areperformed such that band compression results.

Likewise, the up conversion operations 1008 of the BB/IF MFBMS signal1004 to the RF MFBMS signal 300 perform band expansion, resulting inalteration of frequency separation of the information signals withincorresponding spectra. Thus, the up conversion operations of FIG. 10differ from those of FIGS. 3, 4B, and 4C. Operations that cause suchfrequency band compression and frequency band expansion will bedescribed further herein with reference to FIGS. 12 and 13,respectively. Structures that are operable to create and operate uponthese signals will be described further herein with reference to FIGS.14A, 14B, 15A, 15B, 16A, and 16B.

FIG. 11A is a diagram illustrating power spectral densities of a RFMFBMS signal and a BB/IF MFBMS signal constructed and operated onaccording to one or more embodiments of the present invention. With theoperations of FIG. 11A, inbound RF MFBMS signal 300 is down converted bydown conversion operations 1102 to perform band conversion, bandcompression, and band deletion such that not all information signals302, 304, 306, and 308 signals are present in the inbound BB/IF MFBMSsignal 1104. With the example of FIG. 11A, only information signals 302,304 and 308 are present in the inbound BB/IF MFBMS signal 1104. Further,as is shown, information signals 302, 304, and 308 in the inbound BB/IFMFBMS signal 1104 reside within a BB/IF MFBMS spectrum 1106 that differsfrom the BB/IF MFBMS spectrum 1106 of FIG. 10. Further, the bandseparation of information signals 302, 304, and 308 of the RF MFBMSsignal 300 differs from the band separation of the BB/IF MFBMS signal1104.

FIG. 11B is a diagram illustrating power spectral densities of a RFMFBMS signal and a BB/IF MFBMS signal constructed and operated onaccording to one or more embodiments of the present invention. With theoperations of FIG. 11B, inbound RF MFBMS signal 300 is down converted bydown conversion operations 1122 to perform band conversion, bandcompression, and band deletion such that not all information signals302, 304, 306, and 308 signals are present in the inbound BB/IF MFBMSsignal 1104. With the example of FIG. 11B, only information signals 302and 308 are present in the inbound BB/IF MFBMS signal 1124. Further, asis shown, information signals 302 and 308 in the inbound BB/IF MFBMSsignal 1124 reside within a baseband/low IF MFBMS spectrum 1126 thatdiffers from the BB/IF MFBMS spectrum 1006 of FIG. 10 and the BB/IFMFBMS spectrum 1106 of FIG. 11A.

FIG. 11C is a diagram illustrating power spectral densities of a RFMFBMS signal and a BB/IF MFBMS signal constructed and operated onaccording to one or more embodiments of the present invention. With theoperations of FIG. 11C, outbound BB/IF MFBMS signal 1130 is up convertedby up conversion operations 1134 to perform band conversion and bandexpansion such that all information signals 302, 304, and 308 signalsare present in the outbound RF MFBMS signal 1136 but have differingfrequency separation as compared to the outbound BB/IF MFBMS signal1130. With the example of FIG. 11C, information signals 302, 304, and308 have a first frequency separation in the BB/IF MFBMS spectrum 1132and a second frequency separation in the RF MFBMS spectrum 310. Thefirst frequency separation differs from the second frequency separation.

FIG. 11D is a diagram illustrating power spectral densities of a RFMFBMS signal and a BB/IF MFBMS signal constructed and operated onaccording to one or more embodiments of the present invention. With theoperations of FIG. 11D, outbound BB/IF MFBMS signal 1150 is up convertedby up conversion operations 1154 to perform band conversion and bandexpansion such that all information signals 302, 304, and 308 signalsare present in the outbound RF MFBMS signal 1156 but have differingfrequency separation therein as compared to the outbound BB/IF MFBMSsignal 1150. With the example of FIG. 11D, information signals 302, 304,and 308 have a first frequency separation in the BB/IF MFBMS spectrum1152 and a second frequency separation in the RF MFBMS spectrum 310. Thefirst frequency separation differs from the second frequency separation.

FIG. 12 is a flow chart illustrating receive operations according to thepresent invention. Particularly, FIG. 12 considers receive operations1200 of a wireless device. These operations 1200 are consistent with thepower spectral densities of FIGS. 10, 11A, and 11B and with thestructure of FIGS. 14A and 14B. These operations 1200 commence with thewireless device identifying information signals for receipt that arecarried by the RF MFBMS signal (Step 1202). The wireless device thendetermines the desired BB/IF frequency/frequencies of informationsignal(s) that will be produced in the BB/IF MFBMS signal (Step 1204).Operation continues with the wireless device determining one or moreshift frequencies based upon the operations of Steps 1202 and 1204 (Step1206). The reader should understand that the shift frequencies that areapplied to the various information signals 302, 304, 306, and 308 of theRF MFBMS signal 300 during subsequent down conversion operations aredetermined using a number of differing considerations. A firstconsideration is which of the information signals 302, 304, 306, and/or308 are desired for receipt by the wireless device. For example, if thewireless device is only currently operating upon a cellular informationsignal and a WPAN signal, only those two information signals will beused in determining the shift frequencies at Step 1206 even though manyother information signals may be available for receipt. Further, thelocation of the information signals within the BB/IF MFBMS spectrum1006, 1106 or 1126 are also considered in determining the shiftfrequency.

For each information signal, an RF receiver section of a wireless deviceperforms down conversion using respective shift frequencies and bandpass filters (Step 1208). Operation continues with combining the downconverted information signals to form the BB/IF MFBMS signal (Step1210). The BB/IF MFBMS signal is then optionally filtered at Step 1212to remove undesired spectra. Then, the wireless device extracts datafrom the BB/IF MFBMS signal (Step 1214).

The operations 1200 of FIG. 12 differ for each of the illustrated powerspectral densities of FIGS. 10, 11A, and 11B. With embodiment of FIG.10, the inbound BB/IF MFBMS signal 1004 includes information signals302, 304, 306, and 308. With the embodiment of FIG. 11A, the inboundBB/IF MFBMS signal 1104 includes information signals 302, 304, and 308.With the embodiment of FIG. 11B, the inbound BB/IF MFBMS signal 1124includes information signals 302 and 308. Thus, the operations 1200 ofFIG. 12 will be different for the differing power spectral densitiesillustrated in FIGS. 10, 11A, and 11B.

FIG. 13 is a flow chart illustrating transmit operations according tothe present invention. In particular, FIG. 13 illustrates transmitoperations 1300 of a wireless device. With a first operation, thewireless device determines RF frequency bands of an RF MFBMS informationsignal to be formed for transmission (Step 1302). The wireless devicethen determines BB/IF information signal frequencies of a BB/IF MFBMSsignal that will be constructed (Step 1304). As has been previouslydescribed, a baseband processing module forms the BB/IF MFBMS signal. Insome operations it may be desirable for all of the information signalspresent in the BB/IF MFBMS signal to be band expanded, ordered in aparticular spectral fashion, have particular spectral separation, orotherwise particularly formed for desired operations. The RF MFBMSsignal has requirements for placement of the information signals with acorresponding RF MFBMS spectrum, as determined by one or more operatingstandards.

Next, the wireless device determines a plurality of shift frequenciesbased upon the operations of Steps 1302 and 1304 (Step 1306). Operationcontinues with the baseband processing module of the wireless devicemodulating data to create the BB/IF MFBMS signal (Step 1310). Thetransmitter section of the wireless device then up converts eachinformation signal of the BB/IF MFBMS signal by a respective shiftfrequency (Step 1312). The transmitter section then combines the upconverted information signals to form the RF MFBMS signal (Step 1314).The transmitter section then filters/amplifies the RF MFBMS signal toremove undesired spectral (Step 1316). Then, the wireless devicetransmits the RF MFBMS signal (Step 1318).

The operations 1300 of FIG. 13 differ for the illustrated power spectraldensities of FIGS. 10, 11C, and 11D. With particular reference to FIG.10, the BB/IF MFBMS signal 1004 includes information signals 302, 304,306, and 308. With the embodiment of FIG. 11C, the outbound BB/IF MFBMSsignal 1130 includes only information signals 302, 304, and 308. Withthe embodiment of FIG. 11D, the outbound BB/IF MFBMS signal 1150includes only information signals 302, 304, and 308. However, the RFMFBMS signals 1136 and 1156 of FIGS. 11C and 11D, respectively, differ.The RF MFBMS signals 1136 and 1156 of FIGS. 11C and 11D not only havediffering spectral positions of information signals 302, 304, and 308but have differing frequency separations as well. Thus, the operations1300 of FIG. 13 will be different for the differing power spectraldensities illustrated in FIGS. 10, 11C, and 11D. The structures of FIGS.15A, 15B, 16A, and 16B may be employed to perform operations 1300 ofFIG. 13.

FIG. 14A is a block diagram illustrating a receiver section of awireless device constructed according to one or more embodiments of thepresent invention. The particular receiver section of FIG. 14A mayexecute the operations of 1200 of FIG. 12 and the operationscorresponding to FIGS. 10, 11A, and 11B. The receiver section 252includes a plurality of receive paths each of which couples to receivethe RF MFBMS signal from antenna 1400. In other embodiments, additionalantennas may be employed. A first receive path includes LNA 1402A,filter 1404A, mixer 1406A, and filter 1408A. A second receive pathincludes LNA 1402B, filter 1404B, mixer 1406B, and filter 1408B. A thirdreceive path includes LNA 1402C, filter 1404C, mixer 1406C, and filter1408C. An Nth receive path includes LNA 1402N, filter 1404N, mixer1406N, and filter 1408N.

Each of these receive paths down converts the RF MFBMS signal by arespective shift frequency, e.g., FS₁, FS₂, FS₃, and FS_(N), to producea respective BB/IF information signal component and may also filter suchBB/IF information signal component. Summer 1410 sums the outputs of eachof the receive paths to produce the BB/IF MFBMS signal. The output ofsummer 1410 is digitized by ADC 1412 and produced to baseband processingmodule 260 for an extraction of data there from. Each of the componentsof the receiver section 254 may be frequency adjusted based upon BB/IFand RF frequencies of corresponding information signals upon which theparticular path operates.

For example, referring to the spectrum of FIG. 10, each of the receivepaths would operate upon a corresponding information signal 302, 304,306, and/or 308. Referring to the embodiment of FIG. 11A, since onlythree information signals 302, 304, and 308 are produced within theBB/IF MFBMS signal 1104 produced, only three receive paths of thestructure of FIG. 14A would be required. Referring to the embodiment ofFIG. 11B, since only two information signals 302 and 308 are producedwithin the BB/IF MFBMS signal 1124 produced, only two receive paths ofthe structure of FIG. 14A would be required.

Still referring to FIG. 14A, each of the receive paths may include atleast one adjustable analog signal path component operable to adjust atleast one of the RF MFBMS signal and the BB/IF information signals. Eachof the adjustable analog signal path components may be set to have arespective particular frequency response by the processing circuitry 260depending upon the particular operation of the receiver section 252.Generally, the adjustable analog signal path components will havesettings applied thereto based upon the characteristics of the RF MFBMSsignal upon which their respective receive path operates and/or thecharacteristics of the BB/IF information signal they operate. Theadjustable signal path components may be LNAs, e.g. LNA 1402A, RFfilters, e.g., RF filter 1404A, a mixer, e.g., mixer 1406A, and/or BB/IFfilters, e.g., filter 1408A. Of course, each of the receive paths of thereceiver section 252 includes a plurality of differing adjustable analogsignal path components.

The adjustable analog signal path component may be a frequencyadjustable LNA 1402A with a frequency response adjusted based upon afrequency band of interest of the RF MFBMS signal. The LNA 1402A mayalso be adjustable based upon the modulation type(s) of the RF MFBMSsignal. Particular operations of the LNA 1402A and other components thatare adjustable on a frequency or other basis will be described furtherwith reference to FIGS. 17, 18, 19, and 20.

The adjustable analog signal path component of a particular receive pathof the receiver section 252 may be an adjustable filter 1404A thatoperates upon the RF MFBMS signal. The filter 1404A is frequencyadjustable based upon a frequency band of interest the RF MFBMS signal1404A. Generally, the adjustable filter 1404A may be a band pass filterin some embodiments that band pass filters the RF MFBMS signal. Theanalog signal path component may also be filter 1408A that operates upona BB/IF information signal. The filter 1408A may be a band pass filter,low pass filter, or a high pass filter that has been previouslydiscussed herein. For example, depending upon the frequency of the BB/IFinformation signal produced by the respective receive path of thereceiver section 252, the analog filter has its settings applied so thatit only passes the BB/IF information signal produced by the respectivereceive path.

Further, the adjustable analog signal path component may be frequencyadjustable down conversion circuitry 1406A. With this embodiment, thedown conversion circuitry 1406A is band adjustable so that the frequencycharacteristics of the down conversion circuitry match not only thefrequency of the RF MFBMS signal (or a portion thereof) but also thebandwidth of the BB/IF information signal produced by the downconversion circuitry 1406A of the particular receive path. In such case,some receive paths from the receiver section 252 may operate withbroader frequency bands while others will operate with narrowerfrequency bands. Thus, in some cases, the various down conversioncircuitry of the differing receive paths may have differing bandwidthsand/or gain characteristics based upon settings applied thereto.

The ADC 1412 may also be tunable based upon spectral characteristics ofthe BB/IF MFBMS signal. With the structure of FIG. 14A, the ADC 1412 isoperable to digitize the BB/IF MFBMS signal to produce a digitizedrepresentation thereof. As was previously discussed, the BB/IF MFBMSsignal may have differing spectral characteristics over time based uponthe number of information signals to be extracted there from. Thus,according to the present invention, the processing circuitry 260 mayalter the operating characteristics of the ADC 1412 based upon thecharacter of the information signals from which data will be extractedby baseband processing module 260.

As will be further described herein with reference to FIGS. 25-29, theoperating parameters of the ADC 1412 that may be varied include thesample rate of the ADC, the bandwidth of the ADC, the dynamic range ofthe ADC, and/or the signal to noise ratio of the ADC. The sample rate ofthe ADC 1412 is the rate at which the ADC 1412 samples the incominganalog signal. The bandwidth of the ADC 1412 represents the frequencyband of information that may be captured by the ADC 1412 and produced ina digital representation of the signal. The dynamic range of the ADC1412 represents the signal range that the ADC 1412 may capture, and thesignal to noise ratio of the ADC 1412 represents a quality of conversionof the ADC. For example, some information signals carrying the BB/IFMFBMS signal may use relatively simpler modulations, e.g., BPSKmodulation, as compared to more complex modulations, e.g., high orderQAM modulation. With relatively simpler modulation techniques, a lowersignal to noise ratio and/or dynamic range is required in the digitizedoutput samples of the BB/IF MFBMS information signals. Alternatively,higher order modulations of the information signals within the BB/IFMFBMS signal require greater dynamic range, sample rate, and/or signalto noise ratio in the digitized output produced by ADC 1412.

Likewise, the sample rate of the ADC 1412 is determined based upon thehighest spectral component of the BB/IF MFBMS signal. Thus, for lowersymbol rates of information signals of the BB/IF MFBMS signal, the ADC1412 may use a relatively lower sampling rate. Likewise, the bandwidthof the ADC 1412 is determined based upon the spectral range of the BB/IFMFBMS signal. If the information signal or signals of the BB/IF MFBMSsignal has a relatively narrower frequency band, the bandwidth of theADC 1412 may be reduced to correspond to such information signals.However, if the information signals of the BB/IF MFBMS signal extendacross an extended frequency band, the bandwidth of the ADC 1412 must bewide enough to capture all information contained in such informationsignals.

FIG. 14B is a block diagram illustrating a receiver section of awireless device constructed according to one or more embodiments of thepresent invention. The particular receiver section of FIG. 14B mayexecute the operations of 1200 of FIG. 12 and the operationscorresponding to FIGS. 10, 11A, and 11B. The structure of FIG. 14B issimilar to the structure of FIG. 14A. As contrasted to the structure ofFIG. 14A, the receiver section 252 includes a single LNA 1402 thatreceives the RF MFBMS signal from antenna 1400, amplifies the RF MFBMSsignal and passes the amplified RF MFBMS signal to each of the pluralityof receive paths. Other than this structural difference, the receiversection 252 of the wireless device of FIG. 14B operates same/similar tothe receiver section 252 of the wireless device of FIG. 14A.

The wireless device of FIG. 14A or FIG. 14B includes processingcircuitry (baseband processing module 260) that is operable to determinea set of RF information signals for receipt, the set of RF informationsignals of a RF MFBMS signal having a plurality of information signalfrequency band. The antenna 1400 is operable to receive the RF MFBMSsignal. The receiver section 252 couples to the antenna 1400 and to theprocessing circuitry 260 and includes a plurality of receive paths, eachreceive path having down-conversion circuitry 1406A-N, which is operableto down-convert at least a portion of the RF MFBMS signal by arespective shift frequency to produce a corresponding BB/IF informationsignal. The combiner 1410 is operable to combine the plurality of BB/IFinformation signals produced by the plurality of receive paths to form aBB/IF MFBMS signal. The ADC 1412 digitizes the BB/IF MFBMS signal andthe processing circuitry 260 extracts data from the BB/IF MFBMS signalcorresponding to the set of RF information signals. The basebandprocessing module may pass the extracted data to host processingcircuitry for further use.

With one operation of the embodiments of FIGS. 14A and 14B, a firstreceive path of the plurality of receive paths is operable todown-convert the RF MFBMS signal by a first shift frequency to produce afirst BB/IF information signal. Further, a second receive path of theplurality of receive paths is operable to down-convert the RF MFBMSsignal by a second shift frequency to produce a second BB/IF informationsignal. The combiner is then operable to combine the first and secondBB/IF information signals to produce the BB/IF MFBMS signal.

With another operation of the embodiments of FIGS. 14A and 14B, thefirst receive path of the plurality of receive paths is operable todown-convert the RF MFBMS signal by a first shift frequency to produce afirst BB/IF information signal. A second receive path of the pluralityof receive paths is operable to down-convert the RF MFBMS signal by asecond shift frequency to produce a second BB/IF information signal. Athird receive path of the plurality of receive paths is operable todown-convert the RF MFBMS signal by a third shift frequency to produce athird BB/IF information signal. The combiner is then operable to combinethe first, second, and third BB/IF information signals to produce theBB/IF MFBMS signal.

With either embodiment of FIG. 14A or 14B, the down-conversion circuitryof each of the plurality of receive paths may operable to down-convertthe RF MFBMS signal by a common shift frequency. With either embodimentof FIG. 14A or 14B, a first information signal frequency band of the RFMFBMS signal may be a WLAN frequency band and a second informationsignal frequency band of the RF MFBMS signal may be a cellular telephonyfrequency band. With either embodiment of FIG. 14A or 14B, a firstinformation signal frequency band of the RF MFBMS signal may be a WPANfrequency band and a second information signal frequency band of the RFMFBMS signal may be a cellular telephony frequency band. With eitherembodiment of FIG. 14A or 14B, a first information signal frequency bandof the RF MFBMS signal may be a bi-directional communication frequencyband and a second information signal frequency band of the RF MFBMSsignal may be a GPS frequency band. With either embodiment of FIG. 14Aor 14B, a first information signal frequency band of the RF MFBMS signalmay be a first bi-directional communication frequency band, a secondinformation signal frequency band of the RF MFBMS signal may be a secondbi-directional communication frequency band, and a third informationsignal frequency band of the RF MFBMS signal may be a GPS frequencyband.

Referring to FIG. 14B, the various components of the multiple receivepaths of receiver section 252 may be adjustable in frequency responseand/or gain. The LNA 1402 of the receiver section 252 may be alsofrequency adjustable as well as gain adjustable. Construction of the LNA1402 of FIG. 14B and the LNA of 1402A-1402N of FIG. 14A will be furtherdescribed with reference to FIGS. 17 and 18.

FIG. 14C is a block diagram illustrating a portion of a wireless deviceconstructed according to one or more embodiments to the presentinvention. As contrasted to the structures of FIGS. 14A and 14B, thestructure of FIG. 14C includes an ADC for each of the plurality ofreceive paths. Thus, the first receive path includes ADC 1412A, thesecond receive path includes ADC 1412B, the third receive path includesADC 1412C, and the Nth receive path includes ADC 1412N. One or more ofthese ADCs 1412A, 1412B, 1412C, and/or 1412N is adjustable by processingcircuitry 260. The adjustment of the ADCs 1412A, 1412B, 1412C, and/or1412N is based upon the spectral characteristics and signal processingrequirements of the BB/IF information signal for the particular receivepath. For example, some of the BB/IF information signals processed bythe plurality of receive paths may have differing spectralcharacteristics than do the other BB/IF information signals operatedupon by the differing receive path. In such case, then each of the ADCs1412A, 1412B, 1412C, and/or 1412N may have different tuning parametersapplied thereto by processing circuitry 260. The reader shouldappreciate that the ADC tuning parameters of receive paths discussedherein with reference to any of the figures applies also to the otherADC's described herein without limitation.

FIG. 15A is a block diagram illustrating a transmitter section of awireless device constructed according to one or more embodiments of thepresent invention. The transmitter section 254 produces an RF MFBMSsignal 300 according to one or more of FIG. 10, 11C or 11D, for example.The transmitter section 254 includes a plurality of transmit paths. Eachtransmit path includes at least a filter, a mixer and an optionalfilter. For example, a first transmit path includes filter 1504A, mixer1506A, and optional filter 1508A. Likewise, a second transmit pathincludes filter 1504B, mixer 1506B, and optional filter 1508B. The thirdtransmit path includes filter 1504C, mixer 1506C, and optional filter1508C. Further, the Nth transmit path includes filter 1504N, mixer1506N, and optional filter 1508N.

According to the structure of FIG. 15A, a single digital analogconverter (DAC) 1502 produces an analog representation of the BB/IFMFBMS signal that includes a plurality of information signals. Theoutput of the DAC 1502 is received by each of the transmit paths, eachof which creates a respective component of an RF MFBMS signal. Sumer1510 sums each of the components of the RF MFBMS signal to produce theRF MFBMS signal to antenna 1500. Each mixer 1506A, 1506B, 1506C, and1506N up converts a corresponding portion of the BB/IF MFBMS signalreceived from the DAC 1502 by a respective shift frequency, FS₁, FS₂,FS₃, and FS_(N), respectively. After up sampling, each of the transmitpaths produces a corresponding information signal in the RF MFBMSspectrum. Combining of these components by the combiner/summer 1510produces the RF MFBMS signal. Power Amplifier (PA) 1512 amplifies the RFMFBMS signal, which couples the signal to antenna 1500.

According to one aspect of the structure of FIG. 15A, the filters 1504A,1504B, 1504C, and 1504N are constructed to band pass substantially onlyan information signal component upon which that particular path operatesupon. For example, referring again to FIG. 11C, a first transmit paththat includes filter 1504A may perform band pass filtering uponinformation signal 302 of a corresponding BB/IF MFBMS signal. Likewise,a second transmit path of the transmitter section 254 may include filter1504B that is set to band pass filter information signal 304 and bandpass filter 1504C of a third transmit path is set to band pass filterinformation signal 308. These principles may be further extended toapply to the other components of the transmitter section 254. Further,filters 1508A, 1508B, 1508C, and 1508N may be tuned to band pass filterthe corresponding RF information signals.

FIG. 15B is a block diagram illustrating a transmitter section of awireless device constructed according to one or more embodiments of thepresent invention. The particular receiver section of FIG. 15B mayexecute the operations of 1300 of FIG. 13 and the operationscorresponding to FIGS. 10, 11C, and 11D. The structure of FIG. 15B issimilar to the structure of FIG. 15A. As contrasted to the structure ofFIG. 15A, the transmitter section 254 includes a PA in each transmitpath. In particular a first transmit path includes PA 1512A, a secondtransmit path includes PA 1512B, a third transmit path includes PA1512C, and an Nth transmit path includes PA 1512N. The output from eachof these PAs 1512A, 1512B, 1512C, and 1512N is received by combiner 1510that sums the RF information signals to form the RF MFBMS signal and tooutput the RF MFBMS signal to antenna 1500. Other than this structuraldifference, the transmitter section 254 of the wireless device of FIG.15B operates same/similar to the receiver section 254 of the wirelessdevice of FIG. 15A.

FIG. 16A is a block diagram illustrating a transmitter section of awireless device constructed according to another embodiment of thepresent invention. The transmitter section 254 of FIG. 16A differs fromthe transmitter section illustrated in FIGS. 15A and 15B but performssimilar operations. With the structure of FIG. 16A, the basebandprocessing module 260 produces respective digitized information signalsof a BB/IF MFBMS signal to a plurality of transmit paths. A firsttransmit path that receives a first information signal of the BB/IFMFBMS signal converts the first information signal component to ananalog signal using DAC 1602A. The output of DAC 1602A is filtered byfilter 1604A, up converted by mixer 1606A based upon a particular shiftfrequency, and optionally filtered by filter 1608A. Likewise, the secondtransmit path includes DAC 1602B, filter 1604B, mixer 1606B, and filter1608B and operates upon a second information signal. A third transmitpath includes DAC 1602C, filter 1604C, mixer 1606C, and filter 1608C andoperates upon a third information signal. Finally, the Nth transmit pathincludes DAC 1602N, filter 1604N, mixer 1606N, and filter 1608N andoperates upon an Nth information signal. Each of the transmit paths ofthe transmitter section 254 produces a respective component of the RFMFBMS signal. Summer 1610 sums the outputs of each of the transmit pathsto construct the RF MFBMS signal, which includes the plurality ofinformation signals each residing within respective positions of the RFMFBMS spectrum. Combining of these components by the combiner/summer1510 produces the RF MFBMS signal. Power Amplifier (PA) 1612 amplifiesthe RF MFBMS signal, which couples to signal to antenna 1600.

FIG. 16B is a block diagram illustrating a transmitter section of awireless device constructed according to one or more embodiments of thepresent invention. The particular receiver section of FIG. 16B mayexecute the operations of 1300 of FIG. 13 and the operationscorresponding to FIGS. 10, 11C, and 11D. The structure of FIG. 16B issimilar to the structure of FIG. 16A. As contrasted to the structure ofFIG. 16A, the transmitter section 254 includes a PA in each transmitpath. In particular a first transmit path includes PA 1612A, a secondtransmit path includes PA 1612B, a third transmit path includes PA1612C, and an Nth transmit path includes PA 1612N. The output from eachof these PAs 1612A, 1612B, 1612C, and 1612N is received by combiner 1610that sums the RF information signals to form the RF MFBMS signal and tooutput the RF MFBMS signal to antenna 1600. Other than this structuraldifference, the transmitter section 254 of the wireless device of FIG.16B operates same/similar to the receiver section 254 of the wirelessdevice of FIG. 16A.

Referring to all of FIGS. 15A, 15B, 16A, and 16B, a wireless devicecontaining such structures includes the baseband processing module 260(processing circuitry). The processing circuitry 260 is operable toproduce a plurality of BB/IF information signals. These BB/IFinformation signals may be produced separately such as with theembodiments of FIGS. 16A and 16B or combined into a BB/IF MFBMS signalsuch as with the embodiments of FIGS. 15A and 15B. The transmittersection 254 couple to the processing circuitry 260 and includes theplurality of transmit paths. Each transmit path includes up-conversioncircuitry, e.g., 1506A, 1506B, etc. that is operable to up-convert arespective BB/IF information signal by a respective shift frequency toproduce a RF information signal. The combiner, e.g., 1510 or 1610 isoperable to combine the RF information signals produced by the pluralityof transmit paths to form the RF MFBMS signal having a plurality ofinformation signal frequency bands. The antenna 1500/1600 couples to thetransmitter section 254 and is operable to transmit the RF MFBMS signal.

Consistent with the embodiments of FIGS. 15A, 15B, 16A, and 16B, each ofthe plurality of BB/IF information signals resides within a respectiveBB/IF frequency band. According to one operation of the embodiments ofFIGS. 15A, 15B, 16A, and 16B a first transmit path of the plurality oftransmit paths is operable to up-convert a respective BB/IF informationsignal by a first shift frequency to produce a first RF informationsignal. Further, a second transmit path of the plurality of transmitpaths is operable to up-convert a respective BB/IF information signal bya second shift frequency to produce a second RF information signal. Thecombiner is operable to combine the first and second RF informationsignals to produce the RF MFBMS signal.

According to another operation of embodiments of FIGS. 15A, 15B, 16A,and 16B, a first transmit path of the plurality of transmit paths isoperable to up-convert a respective BB/IF information signal by a firstshift frequency to produce a first RF information signal. A secondtransmit path of the plurality of transmit paths is operable toup-convert a respective BB/IF information signal by a second shiftfrequency to produce a second RF information signal. A third transmitpath of the plurality of transmit paths is operable to up-convert arespective BB/IF information signal by a third shift frequency toproduce a third RF information signal. Finally, the combiner is operableto combine the first, second, and third RF information signals toproduce the RF MFBMS signal.

According to various operations of embodiments of FIGS. 15A, 15B, 16A,and 16B, he up-conversion circuitry of each of the plurality of transmitpaths is operable to up-convert a respective BB/IF information signal bya common shift frequency. Further, with the embodiments of FIGS. 15A and16A, the transmitter section 254 includes a PA coupled between theantenna and the combiner. With the embodiments of FIGS. 15B and 16B,each of the plurality of transmit paths further includes a PA coupledbetween the up-conversion circuitry and the combiner.

With any of the embodiments of FIGS. 15A, 15B, 16A, and 16B, a firstinformation signal frequency band of the RF MFBMS signal may be aWireless WLAN frequency band and a second information signal frequencyband of the RF MFBMS signal may be a cellular telephony frequency band.With any of the embodiments of FIGS. 15A, 15B, 16A, and 16B, a firstinformation signal frequency band of the RF MFBMS signal may be a WPANfrequency band and a second information signal frequency band of the RFMFBMS signal may be a cellular telephony frequency band. With any of theembodiments of FIGS. 15A, 15B, 16A, and 16B, a first information signalfrequency band of the RF MFBMS signal may be a bi-directionalcommunication frequency band and a second information signal frequencyband of the RF MFBMS signal may be a GPS frequency band. With any of theembodiments of FIGS. 15A, 15B, 16A, and 16B, a first information signalfrequency band of the RF MFBMS signal may be a first bi-directionalcommunication frequency band, a second information signal frequency bandof the RF MFBMS signal may be a second bi-directional communicationfrequency band, and a third information signal frequency band of the RFMFBMS signal may be a GPS frequency band.

Referring in combination to FIGS. 15A, 15B, 16A, and 16B, each of theplurality of transmit paths may include one or more adjustable analogsignal path components. The adjustable analog signal path components areadjustable to variably alter characteristics of one or more of the BB/IFinformation signals and/or corresponding RF information signals operatedon and/or produced by the respective transmit path(s). For example,referring to FIG. 16B, the adjustable analog signal path component maybe PA 1612A. In such case, the frequency adjustable PA 1612A isfrequency adjustable based upon a frequency of interest of the RF MFBMSsignal. With the structure of FIG. 16B, the PA 1612A operates upon aparticular RF information signal of the RF MFBMS signal. The PA 1612A insuch case is tuned to particular characteristics of the RF signal uponwhich it operates.

The at least one adjustable analog signal path component may further bean analog filter 1608A that operates upon the RF MFBMS signal of therespective signal path. In such case, the adjustable analog signal pathcomponent which is the frequency adjustable analog filter 1608 is tunedto the particular frequency band of interest in the RF frequency uponwhich the particular transmit path operates. Further, the adjustableanalog signal path component may be an analog filter that operates upona BB/IF information signal. In such case, the filter 1604A is tunedbased upon the signal characteristics (frequency band, modulation type,SNR requirements, etc.) of the BB/IF information signal of therespective signal path. Moreover, the up conversion circuitry 1608A ofthe signal path may be adjusted so that its frequency response is adesired function for the particular BB/IF information signal upon whichthe transmit path operates and/or the RF MFBMS signal component producedby the particular transmit path.

FIG. 17A is a block diagram illustrating an adjustable LNA constructedaccording to one or more embodiments of the present invention. Theadjustable LNA includes multiple LNA amplifiers 1704A, 1704B, 1704C thatare connected to one another via signal paths and switching matrix 1706.Each of the LNAs may be frequency adjustable and/or gain adjustable.However, in other embodiments, each of the LNAs 1704A, 1704B, and 1704Care not frequency adjustable but are fixed in their frequency responsesand/or not gain adjustable. The LNA 1704A receives the RF MFBMS signaland amplifies the signal. The output of LNA 1704A is received by LNA1704B and by switching matrix 1706. The output of LNA 1704B is receivedby LNA 1704C. Matrix 1706 further receives the output of LNA 1704B. Theoutput of LNA 1704C is received by matrix 1706. The switching matrix1706 receives at least one control input from the processing circuitryof a respective receiver section. Based upon the control input signalreceived from receiver section, the matrix selects an output that is acombination of one or more of the outputs of LNAs 1704A, 1704B, and/or1704C. Thus, overall, the structure of FIG. 17A receives an RF MFBMSsignal and produces an amplified representation thereof. The structureof FIG. 17A may be employed with the structures of FIG. 14A or 14B, orwith other receiver sections constructed according to the presentinvention.

FIG. 17B is a block diagram illustrating another adjustable LNAconstructed according to one or more embodiments of the presentinvention. The adjustable LNA includes multiple LNA amplifiers 1754A,1754B, 1754C that are connected to one another via signal paths andswitching matrix 1756. Each of the LNAs may be frequency adjustableand/or gain adjustable. However, in other embodiments, each of the LNAs1754A, 1754B, and 1754C are not frequency adjustable but are fixed intheir frequency responses and/or not gain adjustable. The LNA 1754Areceives the RF MFBMS signal and amplifies the signal. The output of LNA1754A is received switching matrix 1756. The output of LNA 1754B isreceived by the switching matrix 1756 and the output of LNA 1754C isreceived by the switching matrix 1756. The switching matrix 1756receives at least one control input from the processing circuitry of arespective receiver section. Based upon the control input signalreceived from receiver section, the matrix selects an output that is acombination of one or more of the outputs of LNAs 1754A, 1754B, and/or1754C. Thus, overall, the structure of FIG. 17B receives an RF MFBMSsignal and produces an amplified representation thereof. The structureof FIG. 17B may be employed with the structures of FIG. 14A or 14B, orwith other receiver sections constructed according to the presentinvention.

FIG. 18A is a block diagram illustrating the construct of an adjustableLNA according to one or more embodiments of the present invention. Theadjustable LNA includes a plurality of individually frequency adjustableLNAs 1804A, 1804B, and 1804C. The outputs of each of these LNAs 1804A,1804B, and 1804C is received by summing node 1806 that sums the outputsof the LNAs to produce an amplified signal. In operation, the antenna1802 receives an RF MFBMS signal and produces the RF MFBMS signals toLNA 1804A. The output of summing node 1806 is an amplifiedrepresentation of the RF MFBMS signal. The structure of FIG. 18A may beemployed with the construct of FIGS. 14A, 14B, or with another receiversection constructed according to embodiments of the present invention.In other embodiments, the LNAs 1804A, 1804B, 1804C are not frequencyadjustable. Further, still in other embodiments, switches may be presentin the various signal paths received by summing node 1806 that arecontrolled by the processing circuitry of the wireless device. In suchcase, depending upon the frequency characteristics for the RF MFBMSsignal, the outputs of the LNAs 1804A, 1804B, and 1804C may be switchedon or off to produce a particular frequency and/or gain response.

FIG. 18B is a block diagram illustrating the construct of anotheradjustable LNA according to one or more embodiments of the presentinvention. The adjustable LNA includes a plurality of individuallyfrequency adjustable LNAs 1854A, 1854B, and 1854C. The outputs of eachof these LNAs 1854A, 1854B, and 1854C is received by summing node 1856that sums the outputs of the LNAs to produce an amplified signal. Inoperation, the antenna 1852 receives an RF MFBMS signal and produces theRF MFBMS signals to LNA 1854A, LNA1854B, and LNA1854C. The output ofsumming node 1856 is an amplified representation of the RF MFBMS signal.The structure of FIG. 18B may be employed with the construct of FIGS.14A, 14B, or with another receiver section constructed according toembodiments of the present invention. In other embodiments, the LNAs1854A, 1854B, 1854C are not frequency adjustable. Further, still inother embodiments, switches may be present in the various signal pathsreceived by summing node 1856 that are controlled by the processingcircuitry of the wireless device. In such case, depending upon thefrequency characteristics for the RF MFBMS signal, the outputs of theLNAs 1854A, 1854B, and 1854C may be switched on or off to produce aparticular frequency and/or gain response.

FIGS. 19A and 19B are frequency response curves showing the variousfrequency responses of adjustable analog signal path componentsconstructed according to embodiments of the present invention. Referringto FIG. 19A, an RF MFBMS spectrum 1900 is shown. Also shown in FIG. 19A,are various frequency responses that could be applied to an RF signal byadjustable analog signal path components. As is shown, three individualfrequency response curves 1902, 1904, and 1906 are shown. These variousfrequency response curves 1902, 1904, and 1906 may be frequencyresponses of adjustable analog signal path components with differingcontrol settings applied thereto. Alternatively, these frequencyresponse curves 1902, 1904, and 1906 may be frequency response curves ofindividual analog signal path components such as those illustrated inFIGS. 17A through 18B. If these individual analog signal path componentfrequency response curves 1902, 1904, and 1906 are summed together, acomposite response is produced. Further, one, two or all three of thesefrequency response curves 1902, 1904, and 1906 may be summed to producea composite response from an adjustable analog signal path componentaccording to the present invention.

Referring now to FIG. 19B, frequency responses of one or more analogsignal path components are shown with respect to a BB/IF MFBMS spectrum1950. The frequency response curves include curves 1952, 1954, and 1956.These frequency response curves 1952, 1954, and 1956 may correspond tofilters 1408A, 1408B, 1408C, and/or 1408N of FIG. 14B. Further, thesefrequency response curves may correspond to a single adjustable analogsignal path component with different input settings. Moreover, each ofthese frequency response curves 1952, 1954, and 1956 may correspond toindividual analog signal path components and may be switched in or outto form a composite frequency response that is applied to a BB/IF MFBMSor information signal.

Of course, the frequency response curves of these various elements maydiffer in other embodiments. For example, one element may have broadbandgain while other elements may have narrowband gain for differingportions of the MFBMS spectrum 1950. These are only a few examples thatfall within the scope of the present invention.

FIGS. 20A and 20B illustrate various frequency response curves ofadjustable analog signal path components with respect to an RF MFBMSsignal according to one or more aspects of the present invention.Referring particularly to FIG. 20A, an inbound RF MFBMS signal 300 isshown. This inbound RF MFBMS signal 300 includes a plurality ofinformation signals 302, 304, 306, and 308. All of these informationsignals 302, 304, 306, and 308 reside within the RF MFBMS spectrum 310.As is shown, a frequency mask 2002 is applied by an adjustable analogsignal path component such that information signal 306 and 308 areallowed to pass.

Referring to FIG. 20, operation during a different time period ascompared to FIG. 20A is illustrated. In such case, the inbound RF MFBMSsignal 300 within the RF MFBMS spectrum 310 includes information signals302, 304, 306, and 308. However, in the operation of FIG. 20B, onlyinformation signal 302, 304, and 306 are of interest. In contrast, tothe illustration of FIG. 20A, with which information signals 306 and 308are of interest, with the illustration of FIG. 20B, information signals302, 304, 306 are of interest. Thus, analog signal path components arecontrolled to apply frequency response curves 2052 and 2054 to the RFMFBMS signal 300. Each of these frequency response curves 2052 and 2054represent band pass masks. Such band pass masks allow informationsignals 302, 304, and 306 to pass but reject information signal 308. Forexample, using the structure of FIG. 14A, a first receive path ofreceiver section 252 may enact spectral mask 2052 to receive and downconvert information signals 302 and 304. Likewise, a second receive pathof the receiver section 252 of FIG. 14A may enact mask 2054 of FIG. 20Ato process and down convert information signal 306 of the inbound RFMFBMS signal 300.

FIG. 21 is a flow chart illustrating receive operations according to oneor more embodiments of the present invention. Operation 2100 commenceswith the wireless device, e.g., processing circuitry contained therein,identifying information signals receipt that are carried by the RF MFBMSsignal (Step 2102). The wireless device then allocates receive path toparticular information signal (Step 2104). Then, the wireless devicedetermines the shift frequencies for each receive path (Step 2106). Theoperations 2100 of FIG. 21 may apply to the structure of FIG. 14A, forexample. Operation continues with the receiver section applying shiftfrequencies to respective receive paths (Step 2108). The wireless devicethen determines tuning settings for each receive path (Step 2110). Thereceiver section of processing circuitry then applies the tuningsettings to one or more adjustable analog signal path component of thereceiver section (Step 2112). The wireless device then operates upon anincoming RF MFBMS signal to extract data there from (Step 2114). Suchoperation of Step 2114 includes receiving the RF MFBMS signal, operatingupon the RF MFBMS signal using analog signal path components, downconverting into frequencies the RF MFBMS signals to produce a pluralityof BB/IF information signals. The operation at Step 2114 furtherincludes extracting data from one or more of the BB/IF informationsignals produced by the receiver section.

FIG. 22 is a flow chart illustrating operation of a receiver section forreceiving processing of an RF MFBMS signal according to one or moreembodiments of the present invention. The operation 2200 of FIG. 22 maybe implemented by the structure of FIG. 7 for example. Operation 2200commences with the processing circuitry of the wireless deviceidentifying information signals for receipt that are carried by an RFMFBMS signal (Step 2202). The processing circuitry then determines ashift frequency for down conversion of the RF MFBMS signal (Step 2204).Determination at Steps 2202 and 2204 were previously described hereinand are not described further with reference to FIG. 22. Operationcontinues with the processing circuitry determining tuning settings foradjustable analog signal path components of the receiver section (Step2206). Then, the processing circuitry applies the tuning settings to theadjustable analog signal path components of the receiver section (Step2208). The wireless device then receives the RF MFBMS signal (Step 2210)and down-converts and operates upon the RF MFBMS signal to produce aBB/IF MFBMS signal (Step 2212). Operation continues with the processingcircuitry of the wireless device extracting data from the BB/IF MFBMSsignal (Step 2214).

FIG. 23 is a flow chart illustrating operation of a wireless device fortransmission according to one or more embodiments of the presentinvention. The operations of FIG. 23 may be performed by the structureof FIGS. 15A-16B, for example. The operations 2300 of FIG. 23 commencewith the processing circuitry of the wireless device identifyinginformation signals to be carried by an RF MFBMS signal (Step 2302). Theprocessing circuitry then allocates the transmission paths to theinformation signals (Step 2304). The processing circuitry thendetermines a shift frequency for each allocated transmit path (Step2306). The processing circuitry then applies the shift frequencies totheir respective transmit path (Step 2308). The processing circuitrythen determines tuning settings for each transmit path (Step 2310).These tuning settings correspond to at least one adjustable analogsignal path component for one or more allocated transmit paths. Theprocessing circuitry then applies the tuning settings to the adjustableanalog signal path components of the allocated transmit paths of thetransmit section of the wireless device (Step 2312). The processingcircuitry then produces the BB/IF information signals to the allocatedtransmit paths on the transmitter section. The allocated transmit pathsof the transmitter section operate upon the BB/IF information signals toproduce an RF MFBMS signal and an antenna coupled to the transmittersection and transmits the RF MFBMS signal (Step 2314).

FIG. 24 is a flow chart illustrating operations of a wireless deviceduring transmission according to one or more embodiments of the presentinvention. The operations 2400 of FIG. 24 may be performed by thestructure of FIG. 8. The operations 2400 of FIG. 24 commence with theprocessing circuitry of the wireless device identifying informationsignals for transmission within an RF MFBMS signal (Step 2402). Theoperation 2400 of FIG. 24 continues with the processing circuitrydetermining a shift frequency for up conversion of a BB/IF MFBMS signalto produce the RF MFBMS signal (Step 2404). The processing circuitrythen determines tuning settings for one or more adjustable analog signalpath component of the transmitter section of the wireless device (Step2406). The processing circuitry then applies the tuning settings to theat least one adjustable analog signal path component of the wirelessdevice (Step 2408). The processing circuitry then produces a BB/IF MFBMSsignal (Step 2410). The BB/IF MFBMS signal includes at least oneinformation signal that will eventually be transmitted in as the RFMFBMS signal. The transmitter section that up converts and operates uponthe BB/IF MFBMS signal to produce the RF MFBMS signal (Step 2412). Thewireless device then transmits the RF MFBMS signal (Step 2414).

FIG. 25 is a flow chart illustrating operation for adjusting ADCparameters according to one or more embodiments of the presentinvention. The operations 2500 of FIG. 25 may be performed using thestructure of FIGS. 14A, 14B, and 14C, for example. Operation 2500commences with the processing circuitry identifying information signalsfor receipt that are carried by an RF MFBMS signal (Step 2502). Theprocessing circuitry then allocates one or more receive paths of areceiver section to the information signals (Step 2504). In such case,each information signal may be assigned to a particular receive path.However, in other operations, one receive path may operate upon multipleinformation signals.

The processing circuitry then determines shift frequencies for eachreceive path (Step 2506). The processing circuitry then applies theshift frequencies to the respective receive path (Step 2508). Theprocessing circuitry next determines ADC settings for ADCs of eachreceive path (Step 2510). The ADC settings will be based upon thespectral characteristics and signal content of the information signalsoperated upon by the respective receive paths. The ADC settings mayinclude, for example and without limitation, the sampling frequency ofthe ADC of each receive path, the bandwidth of the ADC of each receivepath, and/or the output resolution of the ADC of each receive path. Theprocessing circuitry then applies the ADC settings to the adjustableADC's of each receive path (Step 2512). The receiver of the wirelessdevice that operates upon the RF MFBMS signal to extract data there from(Step 2514). In operating upon the RF MFBMS signal, the wireless devicewill first down sample the RF MFBMS signals to produce the plurality ofinformation signals and will extract data there from. The operations ofStep 2514 have been previously described and will not be furtherdescribed herein with reference to FIG. 25.

FIG. 26 is a flow chart illustrating operations for receiving an RFMFBMS signal and operating thereupon using adjustable ADC componentsaccording to one or more embodiments of the present invention. Theoperations of FIG. 26 may be employed by the structure of FIG. 7, forexample. The operations of FIG. 25 may be performed consistently withthe structure of FIG. 14C as well, since a single ADC is used todigitize a BB/IF MFBMS signal produced by the combined output of theplurality of receive paths. The operations 2600 of FIG. 26 commence withthe processing circuitry identifying information signals for receiptthat are carried by an RF MFBMS signal (Step 2602). The processingcircuitry then determines a shift frequency for down conversion of theRF MFBMS signal (Step 2604). The processing circuitry then applies thetuning settings to the ADC (Step 2608). The wireless device thenreceives the RF MFBMS signal via an antenna (Step 2610). The wirelessdevice then down converts and operates upon the RF MFBMS signals toproduce a BB/IF MFBMS signal and operates upon and digitizes the BB/IFMFBMS signal (Step 2612). Then, the processing circuitry extracts datafrom the BB/IF MFBMS signal (Step 2614).

FIG. 27 is a flow chart illustrating operations according to one or moreembodiments of the present invention for adjusting ADC tuningparameters. The operations 2700 of FIG. 27 commence with the processingcircuitry identifying information signals of an RF MFBMS signal andBB/IF signals (Step 2702). The information signals of the RF MFBMSsignal are within RF information bands and the BB/IF information signalsare within the BB/IF bands. Based upon the characteristics of theseinformation signals, the processing circuitry identifies ADC signalconversion requirements (Step 2704). The ADC signal conversionrequirements are based upon the spectral characteristics of the signalthat is converted by the ADC. For example, the characteristics would bethe bandwidth and frequency components of the BB/IF signal that the ADCwill convert. The ADC signal conversion requirements would be singularfor an embodiment in which only a single ADC is employed. However, if aplurality of receive paths include a plurality of corresponding ADC's,the signal conversion requirements for each of the ADC's may differ.

The processing circuitry then determines the tuning settings for theADC(s) (Step 2706). Then, the processing circuitry applies the tuningsettings to each ADC (Step 2708). As the reader should appreciate, thetuning settings for multiple ADC's may differ based upon the differentcharacteristics of the signals that are being digitized by theirrespective ADCs. Because the requirements for each ADC may change overtime, the processing circuitry will periodically determine whether ornot to alter the ADC tuning (Step 2708). When alternation of the tuningof the ADC's is required, operation proceeds again to Step 2702.Alternatively, if the ADC's do not require re-tuning operation remainsat Step 2708 where the query continues until alteration of the ADC isrequired.

The operation 2700 of FIG. 27 may be further applied to set and alteradjustable analog signal path components of the receiver section of thewireless device. As was previously described, the processing circuitrytunes the analog signal path components based upon the characteristicsof the signals upon which they operate. Because the characteristics ofthe signals upon these analog signal path components may change overtime, the operation 2700 of FIG. 27 may be employed to alter the tuningcharacteristics for these analog signal path components over time in asame/similar manner as was illustrated for the ADC tuning settings.

FIG. 28 is a block diagram illustrating an ADC constructed and operatingaccording to one or more embodiments of the present invention. The ADC2802 receives an analog input signal and produces a digital outputsignal. In the embodiments described herein, the analog input signal maybe a BB/IF MFBMS signal or an information signal within the BB/IF MFBMSrange. When the ADC 2802 operates upon the BB/IF signal the ADC 2802samples the signal and produces a digitized representation thereof forsubsequent operation upon by the baseband processing module. When theADC 2802 operates upon a single information signal within the BB/IFspectrum, the ADC 2802 will sample singularly the BB/IF informationsignal to produce a digitized representation thereof.

The ADC 2802 is tunable according to one or more embodiments of thepresent invention. The tunability of the ADC 2802 may include adjustingthe sample rate of the ADC 2802, adjusting the bandwidth of the ADC2802, adjusting the dynamic range of the ADC 2802, and/or adjusting thesignal to noise ratio of the ADC 2802. Each of these variations in theoperation ADC 2802 was described previously with reference to FIG. 14Aand will not be described further herein with reference to FIGS. 29A and29B.

FIGS. 29A and 29B are power spectral representations illustratinginbound BB/IF MFBMS signals and frequency responses of ADCs operatingthereupon according to one or more embodiments of the present invention.Referring to FIG. 29A, the inbound BB/IF MFBMS signal 2900 includesinformation signals 302, 304, 306, and 308. The inbound BB/IF MFBMSsignal 2900 resides within a BB/IF MFBMS spectrum 2902. With theoperation of FIG. 29A, the wireless device is interested in informationcarried by information signals 302 and 304. Thus, the wireless device isnot interested in information signals 306 and 308. In such case, thewireless device, and in particular the processing circuitry of areceiver of the wireless device, adjusts a bandwidth of an ADC tocorrespond to bandwidth 2902 illustrated in FIG. 29A.

Referring now to FIG. 29B, the inbound BB/IF MFBMS signal 2910 residingin BB/IF MFBMS spectrum 2902 includes information signals 302, 304, 306,and 308. However, with the operation of FIG. 29B, the wireless device isinterested in all of the information signals 302, 304, 306, and 308present within the BB/IF MFBMS spectrum 2902. In such case, theprocessing circuitry of the receiver of the wireless device thereforesets a bandwidth of the ADC to correspond to BB/IF MFBMS spectrum 2912such that all information signals 302, 304, 306, and 308 may becaptured.

The terms “circuit” and “circuitry” as used herein may refer to anindependent circuit or to a portion of a multifunctional circuit thatperforms multiple underlying functions. For example, depending on theembodiment, processing circuitry may be implemented as a single chipprocessor or as a plurality of processing chips. Likewise, a firstcircuit and a second circuit may be combined in one embodiment into asingle circuit or, in another embodiment, operate independently perhapsin separate chips. The term “chip,” as used herein, refers to anintegrated circuit. Circuits and circuitry may comprise general orspecific purpose hardware, or may comprise such hardware and associatedsoftware such as firmware or object code.

The present invention has also been described above with the aid ofmethod steps illustrating the performance of specified functions andrelationships thereof. The boundaries and sequence of these functionalbuilding blocks and method steps have been arbitrarily defined hereinfor convenience of description. Alternate boundaries and sequences canbe defined so long as the specified functions and relationships areappropriately performed. Any such alternate boundaries or sequences arethus within the scope and spirit of the claimed invention.

The present invention has been described above with the aid offunctional building blocks illustrating the performance of certainsignificant functions. The boundaries of these functional buildingblocks have been arbitrarily defined for convenience of description.Alternate boundaries could be defined as long as the certain significantfunctions are appropriately performed. Similarly, flow diagram blocksmay also have been arbitrarily defined herein to illustrate certainsignificant functionality. To the extent used, the flow diagram blockboundaries and sequence could have been defined otherwise and stillperform the certain significant functionality. Such alternatedefinitions of both functional building blocks and flow diagram blocksand sequences are thus within the scope and spirit of the claimedinvention. One of average skill in the art will also recognize that thefunctional building blocks, and other illustrative blocks, modules andcomponents herein, can be implemented as illustrated or by discretecomponents, application specific integrated circuits, processorsexecuting appropriate software and the like or any combination thereof.

As may be used herein, the terms “substantially” and “approximately”provides an industry-accepted tolerance for its corresponding termand/or relativity between items. Such an industry-accepted toleranceranges from less than one percent to fifty percent and corresponds to,but is not limited to, component values, integrated circuit processvariations, temperature variations, rise and fall times, and/or thermalnoise. Such relativity between items ranges from a difference of a fewpercent to magnitude differences. As may also be used herein, theterm(s) “coupled to” and/or “coupling” and/or includes direct couplingbetween items and/or indirect coupling between items via an interveningitem (e.g., an item includes, but is not limited to, a component, anelement, a circuit, and/or a module) where, for indirect coupling, theintervening item does not modify the information of a signal but mayadjust its current level, voltage level, and/or power level. As mayfurther be used herein, inferred coupling (i.e., where one element iscoupled to another element by inference) includes direct and indirectcoupling between two items in the same manner as “coupled to.” As mayeven further be used herein, the term “operable to” indicates that anitem includes one or more of power connections, input(s), output(s),etc., to perform one or more its corresponding functions and may furtherinclude inferred coupling to one or more other items. As may stillfurther be used herein, the term “associated with,” includes directand/or indirect coupling of separate items and/or one item beingembedded within another item. As may be used herein, the term “comparesfavorably,” indicates that a comparison between two or more items,signals, etc., provides a desired relationship. For example, when thedesired relationship is that signal 1 has a greater magnitude thansignal 2, a favorable comparison may be achieved when the magnitude ofsignal 1 is greater than that of signal 2 or when the magnitude ofsignal 2 is less than that of signal 1.

The present invention has also been described above with the aid ofmethod steps illustrating the performance of specified functions andrelationships thereof. The boundaries and sequence of these functionalbuilding blocks and method steps have been arbitrarily defined hereinfor convenience of description. Alternate boundaries and sequences canbe defined so long as the specified functions and relationships areappropriately performed. Any such alternate boundaries or sequences arethus within the scope and spirit of the claimed invention.

Moreover, although described in detail for purposes of clarity andunderstanding by way of the aforementioned embodiments, the presentinvention is not limited to such embodiments. It will be obvious to oneof average skill in the art that various changes and modifications maybe practiced within the spirit and scope of the invention, as limitedonly by the scope of the appended claims.

The invention claimed is:
 1. An integrated circuit comprising: aplurality of receive paths, each of the plurality of receive pathscomprising down-conversion circuitry operable to down-convert a MultipleFrequency Band (MFB) Radio Frequency (RF) signal comprising a pluralityof information signal frequency bands by a respective shift frequency toproduce a corresponding baseband/low Intermediate Frequency (BB/IF)information signal; a combiner operable to combine the plurality ofBB/IF information signals produced by the plurality of receive paths toform a BB/IF MFB signal; processing circuitry configured to determinespectral characteristics of the BB/IF MFB signal; and a tunable analogto digital converter (ADC) to digitize the BB/IF MFB signal, wherein thetunable ADC is configured to set, based upon the spectralcharacteristics of the BB/IF MFB signal, at least one of: a sample rateof the ADC; a bandwidth of the ADC; a dynamic range of the ADC; and asignal to noise ratio of the ADC.
 2. The integrated circuit of claim 1,wherein the ADC is tunable to adjust an output resolution of the ADC. 3.The integrated circuit of claim 1, wherein at least one receive pathfurther comprises at least one adjustable analog signal path component.4. The integrated circuit of claim 3, wherein the at least oneadjustable analog signal path component is selected from the groupconsisting of: a frequency adjustable Low Noise Amplifier (LNA) thatoperates on the RF MFB signal; an analog filter that operates upon theRF MFB signal; an analog filter that operates upon the BB/IF MFBinformation signal; and bandwidth adjustable down-conversion circuitry.5. The integrated circuit of claim 1, wherein: the MFB RF signalincludes a plurality of RF information signal frequency bands; the BB/IFsignal includes a plurality of BB/IF information signal frequency bands;and frequency spacing of the plurality of RF information signalfrequency bands differs from frequency spacing of the BB/IF informationsignal frequency bands.
 6. The integrated circuit of claim 5, whereinthe BB/IF information signal frequency bands are compressed compared tocorresponding RF information signal frequency bands.
 7. The integratedcircuit of claim 5, wherein a number of BB/IF information signalfrequency bands is fewer in number than a number of the plurality of RFinformation signal frequency bands.
 8. The integrated circuit of claim1, wherein the down-conversion circuitry comprises a two stage mixer forat least one of the plurality of receive paths.
 9. The integratedcircuit of claim 1, wherein the plurality of information signalfrequency bands are selected from the group consisting of: at least oneWireless Local Area Network (WLAN) frequency band; at least one WirelessPersonal Area Network (WPAN) frequency band; at least one cellularfrequency band; at least one millimeter wave frequency band; and atleast one Global Positioning System (GPS) frequency band.
 10. A methodcomprising: receiving a Multiple Frequency Band (MFB) Radio Frequency(RF) signal comprising a plurality of information signal frequency bandsby an integrated circuit; for a plurality of receive paths of theintegrated circuit, down converting the MFB RF signal by a respectiveshift frequency to produce a corresponding baseband/low IntermediateFrequency (BB/IF) information signal; combining the plurality of BB/IFinformation signals produced by the plurality of receive paths of theintegrated circuit to form a BB/IF MFB signal; determining spectralcharacteristics of the BB/IF MFB signal; and configuring a tunableanalog to digital converter (ADC) based upon the spectralcharacteristics of the BB/IF MFB signal to set at least one of: a samplerate of the ADC; a bandwidth of the ADC; a dynamic range of the ADC; anda signal to noise ratio of the ADC; and digitizing the BB/IF MFB signalby the ADC.
 11. The method of claim 10, further comprising adjusting anoutput resolution of the ADC.
 12. The method of claim 11, furthercomprising adjusting at least one adjustable analog signal pathcomponent of at least one receive path of the integrated circuit. 13.The method of claim 12, wherein adjusting at least one adjustable analogsignal path component of at least one receive path of the integratedcircuit comprises adjusting at least one of: a frequency adjustable LowNoise Amplifier (LNA) that operates on the RF MFB signal; an analogfilter that operates upon the RF MFB signal; an analog filter thatoperates upon the BB/IF MFB information signal; and bandwidth adjustabledown-conversion circuitry.
 14. The method of claim 10, wherein: the MFBRF signal includes a plurality of RF information signal frequency bands;the BB/IF signal includes a plurality of BB/IF information signalfrequency bands; and frequency spacing of the plurality of RFinformation signal frequency bands differs from frequency spacing of theBB/IF information signal frequency bands.
 15. The method of claim 14,further comprising compressing the BB/IF information signal frequencybands compared to corresponding RF information signal frequency bandsduring down conversion.
 16. The method of claim 10, wherein theplurality of information signal frequency bands are selected from thegroup consisting of: at least one Wireless Local Area Network (WLAN)frequency band; at least one Wireless Personal Area Network (WPAN)frequency band; at least one cellular frequency band; at least onemillimeter wave frequency band; and at least one Global PositioningSystem (GPS) frequency band.
 17. An integrated circuit comprising: aplurality of receive paths, each of the plurality of receive pathscomprising down-conversion circuitry operable to down-convert a MultipleFrequency Band (MFB) Radio Frequency (RF) signal comprising a pluralityof information signal frequency bands by a respective shift frequency toproduce a corresponding baseband/low Intermediate Frequency (BB/IF)information signal; a combiner operable to combine the plurality ofBB/IF information signals produced by the plurality of receive paths toform a BB/IF MFB signal; processing circuitry configured to determinespectral characteristics of the BB/IF MFB signal; filtering the BB/IFMFB signal to produce at least one BB/IF MFB information signals; and atunable analog to digital converter (ADC) to digitize the BB/IF MFBsignal, wherein the tunable ADC is configured to adjust an outputresolution of the ADC based upon the at least one BB/IF MFB informationsignals, the operation of the tunable ADC set based upon the spectralcharacteristics of the BB/IF MFB signal.
 18. The integrated circuit ofclaim 17, wherein the ADC is tunable to adjust, based upon a controlsignal, at least one of: a sample rate of the ADC; a bandwidth of theADC; a dynamic range of the ADC; and a signal to noise ratio of the ADC.19. The integrated circuit of claim 17, wherein: the MFB RF signalincludes a plurality of RF information signal frequency bands; the BB/IFsignal includes a plurality of BB/IF information signal frequency bands;and frequency spacing of the plurality of RF information signalfrequency bands differs from frequency spacing of the BB/IF informationsignal frequency bands.
 20. The integrated circuit of claim 19, whereinthe BB/IF information signal frequency bands are compressed compared tocorresponding RF information signal frequency bands.